Finding the Fourth Proportional to 2,877.12, 3,971.43 and 2,492.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.12 : 3,971.43 = 2,492.17 : x
2. Step 2: Convert to fraction form
   2,877.12/3,971.43 = 2,492.17/x
3. Step 3: Cross multiply
   2,877.12x = 3,971.43 × 2,492.17
4. Step 4: Simplify right side
   2,877.12x = 9,897,468.77
5. Step 5: Solve for x
   x = 9,897,468.77/2,877.12
6. Step 6: Final answer
   x = 3,440.06