Finding the Fourth Proportional to 2,150.64, 3,223.80 and 994.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.64 : 3,223.80 = 994.32 : x
2. Step 2: Convert to fraction form
   2,150.64/3,223.80 = 994.32/x
3. Step 3: Cross multiply
   2,150.64x = 3,223.80 × 994.32
4. Step 4: Simplify right side
   2,150.64x = 3,205,488.82
5. Step 5: Solve for x
   x = 3,205,488.82/2,150.64
6. Step 6: Final answer
   x = 1,490.48