Finding the Fourth Proportional to 1,875.72, 2,587.86 and 1,089.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.72 : 2,587.86 = 1,089.48 : x
2. Step 2: Convert to fraction form
   1,875.72/2,587.86 = 1,089.48/x
3. Step 3: Cross multiply
   1,875.72x = 2,587.86 × 1,089.48
4. Step 4: Simplify right side
   1,875.72x = 2,819,421.71
5. Step 5: Solve for x
   x = 2,819,421.71/1,875.72
6. Step 6: Final answer
   x = 1,503.11