Finding the Fourth Proportional to 1,707.89, 2,560.23 and 1,555.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.89 : 2,560.23 = 1,555.72 : x
2. Step 2: Convert to fraction form
   1,707.89/2,560.23 = 1,555.72/x
3. Step 3: Cross multiply
   1,707.89x = 2,560.23 × 1,555.72
4. Step 4: Simplify right side
   1,707.89x = 3,983,001.02
5. Step 5: Solve for x
   x = 3,983,001.02/1,707.89
6. Step 6: Final answer
   x = 2,332.12