Finding the Fourth Proportional to 1,875.46, 2,587.32 and 1,078.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.46 : 2,587.32 = 1,078.60 : x
2. Step 2: Convert to fraction form
   1,875.46/2,587.32 = 1,078.60/x
3. Step 3: Cross multiply
   1,875.46x = 2,587.32 × 1,078.60
4. Step 4: Simplify right side
   1,875.46x = 2,790,683.35
5. Step 5: Solve for x
   x = 2,790,683.35/1,875.46
6. Step 6: Final answer
   x = 1,488.00