Finding the Fourth Proportional to 921,483.42, 1,381,654.89 and 359,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   921,483.42 : 1,381,654.89 = 359,857.50 : x
2. Step 2: Convert to fraction form
   921,483.42/1,381,654.89 = 359,857.50/x
3. Step 3: Cross multiply
   921,483.42x = 1,381,654.89 × 359,857.50
4. Step 4: Simplify right side
   921,483.42x = 497,198,874,578.18
5. Step 5: Solve for x
   x = 497,198,874,578.18/921,483.42
6. Step 6: Final answer
   x = 539,563.56