Finding the Fourth Proportional to 2,175.63, 3,002.17 and 1,291.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.63 : 3,002.17 = 1,291.27 : x
2. Step 2: Convert to fraction form
   2,175.63/3,002.17 = 1,291.27/x
3. Step 3: Cross multiply
   2,175.63x = 3,002.17 × 1,291.27
4. Step 4: Simplify right side
   2,175.63x = 3,876,612.06
5. Step 5: Solve for x
   x = 3,876,612.06/2,175.63
6. Step 6: Final answer
   x = 1,781.83