Finding the Fourth Proportional to 2,158.88, 3,238.52 and 926.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.88 : 3,238.52 = 926.01 : x
2. Step 2: Convert to fraction form
   2,158.88/3,238.52 = 926.01/x
3. Step 3: Cross multiply
   2,158.88x = 3,238.52 × 926.01
4. Step 4: Simplify right side
   2,158.88x = 2,998,901.91
5. Step 5: Solve for x
   x = 2,998,901.91/2,158.88
6. Step 6: Final answer
   x = 1,389.10