Finding the Fourth Proportional to 2,526.59, 3,789.73 and 1,139.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,526.59 : 3,789.73 = 1,139.37 : x
2. Step 2: Convert to fraction form
   2,526.59/3,789.73 = 1,139.37/x
3. Step 3: Cross multiply
   2,526.59x = 3,789.73 × 1,139.37
4. Step 4: Simplify right side
   2,526.59x = 4,317,904.67
5. Step 5: Solve for x
   x = 4,317,904.67/2,526.59
6. Step 6: Final answer
   x = 1,708.99