Finding the Fourth Proportional to 2,715.68, 3,749.55 and 2,118.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.68 : 3,749.55 = 2,118.82 : x
2. Step 2: Convert to fraction form
   2,715.68/3,749.55 = 2,118.82/x
3. Step 3: Cross multiply
   2,715.68x = 3,749.55 × 2,118.82
4. Step 4: Simplify right side
   2,715.68x = 7,944,612.16
5. Step 5: Solve for x
   x = 7,944,612.16/2,715.68
6. Step 6: Final answer
   x = 2,925.46