Finding the Fourth Proportional to 2,943.49, 4,061.28 and 2,156.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,943.49 : 4,061.28 = 2,156.17 : x
2. Step 2: Convert to fraction form
   2,943.49/4,061.28 = 2,156.17/x
3. Step 3: Cross multiply
   2,943.49x = 4,061.28 × 2,156.17
4. Step 4: Simplify right side
   2,943.49x = 8,756,810.10
5. Step 5: Solve for x
   x = 8,756,810.10/2,943.49
6. Step 6: Final answer
   x = 2,974.98