Finding the Fourth Proportional to 2,238.23, 3,079.72 and 2,180.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.23 : 3,079.72 = 2,180.99 : x
2. Step 2: Convert to fraction form
   2,238.23/3,079.72 = 2,180.99/x
3. Step 3: Cross multiply
   2,238.23x = 3,079.72 × 2,180.99
4. Step 4: Simplify right side
   2,238.23x = 6,716,848.95
5. Step 5: Solve for x
   x = 6,716,848.95/2,238.23
6. Step 6: Final answer
   x = 3,000.96