Finding the Fourth Proportional to 1,925.37, 2,656.40 and 1,139.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,925.37 : 2,656.40 = 1,139.27 : x
2. Step 2: Convert to fraction form
   1,925.37/2,656.40 = 1,139.27/x
3. Step 3: Cross multiply
   1,925.37x = 2,656.40 × 1,139.27
4. Step 4: Simplify right side
   1,925.37x = 3,026,337.85
5. Step 5: Solve for x
   x = 3,026,337.85/1,925.37
6. Step 6: Final answer
   x = 1,571.82