Finding the Fourth Proportional to 2,261.91, 3,391.15 and 875.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.91 : 3,391.15 = 875.06 : x
2. Step 2: Convert to fraction form
   2,261.91/3,391.15 = 875.06/x
3. Step 3: Cross multiply
   2,261.91x = 3,391.15 × 875.06
4. Step 4: Simplify right side
   2,261.91x = 2,967,459.72
5. Step 5: Solve for x
   x = 2,967,459.72/2,261.91
6. Step 6: Final answer
   x = 1,311.93