Finding the Fourth Proportional to 1,715.43, 2,572.12 and 1,056.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,715.43 : 2,572.12 = 1,056.59 : x
2. Step 2: Convert to fraction form
   1,715.43/2,572.12 = 1,056.59/x
3. Step 3: Cross multiply
   1,715.43x = 2,572.12 × 1,056.59
4. Step 4: Simplify right side
   1,715.43x = 2,717,684.39
5. Step 5: Solve for x
   x = 2,717,684.39/1,715.43
6. Step 6: Final answer
   x = 1,584.26