Finding the Fourth Proportional to 2,617.02, 3,920.91 and 1,381.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.02 : 3,920.91 = 1,381.71 : x
2. Step 2: Convert to fraction form
   2,617.02/3,920.91 = 1,381.71/x
3. Step 3: Cross multiply
   2,617.02x = 3,920.91 × 1,381.71
4. Step 4: Simplify right side
   2,617.02x = 5,417,560.56
5. Step 5: Solve for x
   x = 5,417,560.56/2,617.02
6. Step 6: Final answer
   x = 2,070.13