Finding the Fourth Proportional to 1,712.68, 2,561.56 and 1,588.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,712.68 : 2,561.56 = 1,588.15 : x
2. Step 2: Convert to fraction form
   1,712.68/2,561.56 = 1,588.15/x
3. Step 3: Cross multiply
   1,712.68x = 2,561.56 × 1,588.15
4. Step 4: Simplify right side
   1,712.68x = 4,068,141.51
5. Step 5: Solve for x
   x = 4,068,141.51/1,712.68
6. Step 6: Final answer
   x = 2,375.31