Finding the Fourth Proportional to 1,077,820.48, 1,487,402.76 and 618,929.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,820.48 : 1,487,402.76 = 618,929.56 : x
2. Step 2: Convert to fraction form
   1,077,820.48/1,487,402.76 = 618,929.56/x
3. Step 3: Cross multiply
   1,077,820.48x = 1,487,402.76 × 618,929.56
4. Step 4: Simplify right side
   1,077,820.48x = 920,597,535,789.59
5. Step 5: Solve for x
   x = 920,597,535,789.59/1,077,820.48
6. Step 6: Final answer
   x = 854,128.82