Finding the Fourth Proportional to 4,087.30, 6,131.97 and 1,165.61

Step by Step Solution

1. Step 1: Write the proportion equation
   4,087.30 : 6,131.97 = 1,165.61 : x
2. Step 2: Convert to fraction form
   4,087.30/6,131.97 = 1,165.61/x
3. Step 3: Cross multiply
   4,087.30x = 6,131.97 × 1,165.61
4. Step 4: Simplify right side
   4,087.30x = 7,147,454.89
5. Step 5: Solve for x
   x = 7,147,454.89/4,087.30
6. Step 6: Final answer
   x = 1,748.70