Finding the Fourth Proportional to 1,875.57, 2,587.88 and 1,089.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.57 : 2,587.88 = 1,089.19 : x
2. Step 2: Convert to fraction form
   1,875.57/2,587.88 = 1,089.19/x
3. Step 3: Cross multiply
   1,875.57x = 2,587.88 × 1,089.19
4. Step 4: Simplify right side
   1,875.57x = 2,818,693.02
5. Step 5: Solve for x
   x = 2,818,693.02/1,875.57
6. Step 6: Final answer
   x = 1,502.85