Finding the Fourth Proportional to 2,625.60, 3,937.56 and 870.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.60 : 3,937.56 = 870.27 : x
2. Step 2: Convert to fraction form
   2,625.60/3,937.56 = 870.27/x
3. Step 3: Cross multiply
   2,625.60x = 3,937.56 × 870.27
4. Step 4: Simplify right side
   2,625.60x = 3,426,740.34
5. Step 5: Solve for x
   x = 3,426,740.34/2,625.60
6. Step 6: Final answer
   x = 1,305.13