Finding the Fourth Proportional to 2,589,128.80, 3,883,070.40 and 1,326,306.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,128.80 : 3,883,070.40 = 1,326,306.40 : x
2. Step 2: Convert to fraction form
   2,589,128.80/3,883,070.40 = 1,326,306.40/x
3. Step 3: Cross multiply
   2,589,128.80x = 3,883,070.40 × 1,326,306.40
4. Step 4: Simplify right side
   2,589,128.80x = 5,150,141,123,170.56
5. Step 5: Solve for x
   x = 5,150,141,123,170.56/2,589,128.80
6. Step 6: Final answer
   x = 1,989,140.56