Finding the Fourth Proportional to 1,875.49, 2,587.30 and 1,212.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.49 : 2,587.30 = 1,212.55 : x
2. Step 2: Convert to fraction form
   1,875.49/2,587.30 = 1,212.55/x
3. Step 3: Cross multiply
   1,875.49x = 2,587.30 × 1,212.55
4. Step 4: Simplify right side
   1,875.49x = 3,137,221.12
5. Step 5: Solve for x
   x = 3,137,221.12/1,875.49
6. Step 6: Final answer
   x = 1,672.75