Finding the Fourth Proportional to 1,499,728.20, 2,250,117.18 and 434,834.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,728.20 : 2,250,117.18 = 434,834.16 : x
2. Step 2: Convert to fraction form
   1,499,728.20/2,250,117.18 = 434,834.16/x
3. Step 3: Cross multiply
   1,499,728.20x = 2,250,117.18 × 434,834.16
4. Step 4: Simplify right side
   1,499,728.20x = 978,427,813,866.87
5. Step 5: Solve for x
   x = 978,427,813,866.87/1,499,728.20
6. Step 6: Final answer
   x = 652,403.42