Finding the Fourth Proportional to 2,238.78, 3,089.86 and 2,140.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.78 : 3,089.86 = 2,140.34 : x
2. Step 2: Convert to fraction form
   2,238.78/3,089.86 = 2,140.34/x
3. Step 3: Cross multiply
   2,238.78x = 3,089.86 × 2,140.34
4. Step 4: Simplify right side
   2,238.78x = 6,613,350.95
5. Step 5: Solve for x
   x = 6,613,350.95/2,238.78
6. Step 6: Final answer
   x = 2,954.00