Finding the Fourth Proportional to 2,175.71, 3,002.40 and 1,291.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.71 : 3,002.40 = 1,291.01 : x
2. Step 2: Convert to fraction form
   2,175.71/3,002.40 = 1,291.01/x
3. Step 3: Cross multiply
   2,175.71x = 3,002.40 × 1,291.01
4. Step 4: Simplify right side
   2,175.71x = 3,876,113.41
5. Step 5: Solve for x
   x = 3,876,113.41/2,175.71
6. Step 6: Final answer
   x = 1,781.54