Finding the Fourth Proportional to 2,291.85, 3,159.77 and 1,871.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.85 : 3,159.77 = 1,871.46 : x
2. Step 2: Convert to fraction form
   2,291.85/3,159.77 = 1,871.46/x
3. Step 3: Cross multiply
   2,291.85x = 3,159.77 × 1,871.46
4. Step 4: Simplify right side
   2,291.85x = 5,913,373.81
5. Step 5: Solve for x
   x = 5,913,373.81/2,291.85
6. Step 6: Final answer
   x = 2,580.17