Finding the Fourth Proportional to 1,858.80, 2,565.02 and 1,113.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.80 : 2,565.02 = 1,113.10 : x
2. Step 2: Convert to fraction form
   1,858.80/2,565.02 = 1,113.10/x
3. Step 3: Cross multiply
   1,858.80x = 2,565.02 × 1,113.10
4. Step 4: Simplify right side
   1,858.80x = 2,855,123.76
5. Step 5: Solve for x
   x = 2,855,123.76/1,858.80
6. Step 6: Final answer
   x = 1,536.00