Finding the Fourth Proportional to 1,499,280.84, 2,069,149.86 and 820,319.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,280.84 : 2,069,149.86 = 820,319.40 : x
2. Step 2: Convert to fraction form
   1,499,280.84/2,069,149.86 = 820,319.40/x
3. Step 3: Cross multiply
   1,499,280.84x = 2,069,149.86 × 820,319.40
4. Step 4: Simplify right side
   1,499,280.84x = 1,697,363,771,665.28
5. Step 5: Solve for x
   x = 1,697,363,771,665.28/1,499,280.84
6. Step 6: Final answer
   x = 1,132,118.63