Finding the Fourth Proportional to 1,139,178.88, 1,572,074.88 and 622,935.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,178.88 : 1,572,074.88 = 622,935.04 : x
2. Step 2: Convert to fraction form
   1,139,178.88/1,572,074.88 = 622,935.04/x
3. Step 3: Cross multiply
   1,139,178.88x = 1,572,074.88 × 622,935.04
4. Step 4: Simplify right side
   1,139,178.88x = 979,300,528,255.80
5. Step 5: Solve for x
   x = 979,300,528,255.80/1,139,178.88
6. Step 6: Final answer
   x = 859,654.74