Finding the Fourth Proportional to 1,152,827.55, 1,729,304.39 and 478,976.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,827.55 : 1,729,304.39 = 478,976.99 : x
2. Step 2: Convert to fraction form
   1,152,827.55/1,729,304.39 = 478,976.99/x
3. Step 3: Cross multiply
   1,152,827.55x = 1,729,304.39 × 478,976.99
4. Step 4: Simplify right side
   1,152,827.55x = 828,297,004,066.91
5. Step 5: Solve for x
   x = 828,297,004,066.91/1,152,827.55
6. Step 6: Final answer
   x = 718,491.68