Finding the Fourth Proportional to 1,515,978.43, 2,274,061.49 and 505,190.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,978.43 : 2,274,061.49 = 505,190.77 : x
2. Step 2: Convert to fraction form
   1,515,978.43/2,274,061.49 = 505,190.77/x
3. Step 3: Cross multiply
   1,515,978.43x = 2,274,061.49 × 505,190.77
4. Step 4: Simplify right side
   1,515,978.43x = 1,148,834,875,160.45
5. Step 5: Solve for x
   x = 1,148,834,875,160.45/1,515,978.43
6. Step 6: Final answer
   x = 757,817.43