Finding the Fourth Proportional to 1,428,499.20, 2,142,965.88 and 468,636.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,499.20 : 2,142,965.88 = 468,636.24 : x
2. Step 2: Convert to fraction form
   1,428,499.20/2,142,965.88 = 468,636.24/x
3. Step 3: Cross multiply
   1,428,499.20x = 2,142,965.88 × 468,636.24
4. Step 4: Simplify right side
   1,428,499.20x = 1,004,271,472,451.49
5. Step 5: Solve for x
   x = 1,004,271,472,451.49/1,428,499.20
6. Step 6: Final answer
   x = 703,025.58