Finding the Fourth Proportional to 1,200,513.12, 1,800,772.71 and 490,541.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,513.12 : 1,800,772.71 = 490,541.15 : x
2. Step 2: Convert to fraction form
   1,200,513.12/1,800,772.71 = 490,541.15/x
3. Step 3: Cross multiply
   1,200,513.12x = 1,800,772.71 × 490,541.15
4. Step 4: Simplify right side
   1,200,513.12x = 883,353,118,714.42
5. Step 5: Solve for x
   x = 883,353,118,714.42/1,200,513.12
6. Step 6: Final answer
   x = 735,812.97