Finding the Fourth Proportional to 1,612.38, 2,225.55 and 940.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.38 : 2,225.55 = 940.32 : x
2. Step 2: Convert to fraction form
   1,612.38/2,225.55 = 940.32/x
3. Step 3: Cross multiply
   1,612.38x = 2,225.55 × 940.32
4. Step 4: Simplify right side
   1,612.38x = 2,092,729.18
5. Step 5: Solve for x
   x = 2,092,729.18/1,612.38
6. Step 6: Final answer
   x = 1,297.91