Finding the Fourth Proportional to 2,715.30, 3,742.74 and 2,124.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.30 : 3,742.74 = 2,124.81 : x
2. Step 2: Convert to fraction form
   2,715.30/3,742.74 = 2,124.81/x
3. Step 3: Cross multiply
   2,715.30x = 3,742.74 × 2,124.81
4. Step 4: Simplify right side
   2,715.30x = 7,952,611.38
5. Step 5: Solve for x
   x = 7,952,611.38/2,715.30
6. Step 6: Final answer
   x = 2,928.82