Finding the Fourth Proportional to 1,776,582.31, 2,664,276.71 and 578,222.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776,582.31 : 2,664,276.71 = 578,222.78 : x
2. Step 2: Convert to fraction form
   1,776,582.31/2,664,276.71 = 578,222.78/x
3. Step 3: Cross multiply
   1,776,582.31x = 2,664,276.71 × 578,222.78
4. Step 4: Simplify right side
   1,776,582.31x = 1,540,545,485,945.45
5. Step 5: Solve for x
   x = 1,540,545,485,945.45/1,776,582.31
6. Step 6: Final answer
   x = 867,139.94