Finding the Fourth Proportional to 1,299,978.18, 1,948,910.82 and 542,384.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,978.18 : 1,948,910.82 = 542,384.34 : x
2. Step 2: Convert to fraction form
   1,299,978.18/1,948,910.82 = 542,384.34/x
3. Step 3: Cross multiply
   1,299,978.18x = 1,948,910.82 × 542,384.34
4. Step 4: Simplify right side
   1,299,978.18x = 1,057,058,708,824.56
5. Step 5: Solve for x
   x = 1,057,058,708,824.56/1,299,978.18
6. Step 6: Final answer
   x = 813,135.73