Finding the Fourth Proportional to 3,156.33, 4,355.06 and 2,111.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,156.33 : 4,355.06 = 2,111.43 : x
2. Step 2: Convert to fraction form
   3,156.33/4,355.06 = 2,111.43/x
3. Step 3: Cross multiply
   3,156.33x = 4,355.06 × 2,111.43
4. Step 4: Simplify right side
   3,156.33x = 9,195,393.78
5. Step 5: Solve for x
   x = 9,195,393.78/3,156.33
6. Step 6: Final answer
   x = 2,913.32