Finding the Fourth Proportional to 900,960.52, 1,243,308.89 and 493,054.14

Step by Step Solution

1. Step 1: Write the proportion equation
   900,960.52 : 1,243,308.89 = 493,054.14 : x
2. Step 2: Convert to fraction form
   900,960.52/1,243,308.89 = 493,054.14/x
3. Step 3: Cross multiply
   900,960.52x = 1,243,308.89 × 493,054.14
4. Step 4: Simplify right side
   900,960.52x = 613,018,594,414.74
5. Step 5: Solve for x
   x = 613,018,594,414.74/900,960.52
6. Step 6: Final answer
   x = 680,405.61