Finding the Fourth Proportional to 1,816,214,199.59, 2,506,375,499.50 and 980,838,689.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816,214,199.59 : 2,506,375,499.50 = 980,838,689.69 : x
2. Step 2: Convert to fraction form
   1,816,214,199.59/2,506,375,499.50 = 980,838,689.69/x
3. Step 3: Cross multiply
   1,816,214,199.59x = 2,506,375,499.50 × 980,838,689.69
4. Step 4: Simplify right side
   1,816,214,199.59x = 2,458,350,060,808,142,336
5. Step 5: Solve for x
   x = 2,458,350,060,808,142,336/1,816,214,199.59
6. Step 6: Final answer
   x = 1,353,557,339.97