Finding the Fourth Proportional to 2,072.88, 3,123.53 and 1,715.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.88 : 3,123.53 = 1,715.68 : x
2. Step 2: Convert to fraction form
   2,072.88/3,123.53 = 1,715.68/x
3. Step 3: Cross multiply
   2,072.88x = 3,123.53 × 1,715.68
4. Step 4: Simplify right side
   2,072.88x = 5,358,977.95
5. Step 5: Solve for x
   x = 5,358,977.95/2,072.88
6. Step 6: Final answer
   x = 2,585.28