Finding the Fourth Proportional to 2,715.58, 4,070.94 and 1,253.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.58 : 4,070.94 = 1,253.53 : x
2. Step 2: Convert to fraction form
   2,715.58/4,070.94 = 1,253.53/x
3. Step 3: Cross multiply
   2,715.58x = 4,070.94 × 1,253.53
4. Step 4: Simplify right side
   2,715.58x = 5,103,045.42
5. Step 5: Solve for x
   x = 5,103,045.42/2,715.58
6. Step 6: Final answer
   x = 1,879.17