Finding the Fourth Proportional to 2,087,111.80, 3,128,334.90 and 888,830.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087,111.80 : 3,128,334.90 = 888,830.20 : x
2. Step 2: Convert to fraction form
   2,087,111.80/3,128,334.90 = 888,830.20/x
3. Step 3: Cross multiply
   2,087,111.80x = 3,128,334.90 × 888,830.20
4. Step 4: Simplify right side
   2,087,111.80x = 2,780,558,534,833.98
5. Step 5: Solve for x
   x = 2,780,558,534,833.98/2,087,111.80
6. Step 6: Final answer
   x = 1,332,251.84