Finding the Fourth Proportional to 1,254,978.78, 1,882,436.58 and 356,418.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,254,978.78 : 1,882,436.58 = 356,418.24 : x
2. Step 2: Convert to fraction form
   1,254,978.78/1,882,436.58 = 356,418.24/x
3. Step 3: Cross multiply
   1,254,978.78x = 1,882,436.58 × 356,418.24
4. Step 4: Simplify right side
   1,254,978.78x = 670,934,732,755.22
5. Step 5: Solve for x
   x = 670,934,732,755.22/1,254,978.78
6. Step 6: Final answer
   x = 534,618.39