Finding the Fourth Proportional to 662,606.72, 914,372.28 and 404,914.56

Step by Step Solution

1. Step 1: Write the proportion equation
   662,606.72 : 914,372.28 = 404,914.56 : x
2. Step 2: Convert to fraction form
   662,606.72/914,372.28 = 404,914.56/x
3. Step 3: Cross multiply
   662,606.72x = 914,372.28 × 404,914.56
4. Step 4: Simplify right side
   662,606.72x = 370,242,649,432.40
5. Step 5: Solve for x
   x = 370,242,649,432.40/662,606.72
6. Step 6: Final answer
   x = 558,766.82