Finding the Fourth Proportional to 1,707.31, 2,561.61 and 1,381.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.31 : 2,561.61 = 1,381.27 : x
2. Step 2: Convert to fraction form
   1,707.31/2,561.61 = 1,381.27/x
3. Step 3: Cross multiply
   1,707.31x = 2,561.61 × 1,381.27
4. Step 4: Simplify right side
   1,707.31x = 3,538,275.04
5. Step 5: Solve for x
   x = 3,538,275.04/1,707.31
6. Step 6: Final answer
   x = 2,072.43