Finding the Fourth Proportional to 662,391, 914,099.76 and 360,585

Step by Step Solution

1. Step 1: Write the proportion equation
   662,391 : 914,099.76 = 360,585 : x
2. Step 2: Convert to fraction form
   662,391/914,099.76 = 360,585/x
3. Step 3: Cross multiply
   662,391x = 914,099.76 × 360,585
4. Step 4: Simplify right side
   662,391x = 329,610,661,959.60
5. Step 5: Solve for x
   x = 329,610,661,959.60/662,391
6. Step 6: Final answer
   x = 497,607.40