Finding the Fourth Proportional to 2,088,111.80, 3,129,834.90 and 889,830.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,088,111.80 : 3,129,834.90 = 889,830.20 : x
2. Step 2: Convert to fraction form
   2,088,111.80/3,129,834.90 = 889,830.20/x
3. Step 3: Cross multiply
   2,088,111.80x = 3,129,834.90 × 889,830.20
4. Step 4: Simplify right side
   2,088,111.80x = 2,785,021,615,033.98
5. Step 5: Solve for x
   x = 2,785,021,615,033.98/2,088,111.80
6. Step 6: Final answer
   x = 1,333,751.20