Finding the Fourth Proportional to 662,608.72, 914,375.04 and 404,916.56

Step by Step Solution

1. Step 1: Write the proportion equation
   662,608.72 : 914,375.04 = 404,916.56 : x
2. Step 2: Convert to fraction form
   662,608.72/914,375.04 = 404,916.56/x
3. Step 3: Cross multiply
   662,608.72x = 914,375.04 × 404,916.56
4. Step 4: Simplify right side
   662,608.72x = 370,245,595,746.66
5. Step 5: Solve for x
   x = 370,245,595,746.66/662,608.72
6. Step 6: Final answer
   x = 558,769.58