Finding the Fourth Proportional to 1,885.52, 2,602.04 and 1,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.52 : 2,602.04 = 1,139.56 : x
2. Step 2: Convert to fraction form
   1,885.52/2,602.04 = 1,139.56/x
3. Step 3: Cross multiply
   1,885.52x = 2,602.04 × 1,139.56
4. Step 4: Simplify right side
   1,885.52x = 2,965,180.70
5. Step 5: Solve for x
   x = 2,965,180.70/1,885.52
6. Step 6: Final answer
   x = 1,572.61