Finding the Fourth Proportional to 1,422.38, 1,961.52 and 925.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.38 : 1,961.52 = 925.16 : x
2. Step 2: Convert to fraction form
   1,422.38/1,961.52 = 925.16/x
3. Step 3: Cross multiply
   1,422.38x = 1,961.52 × 925.16
4. Step 4: Simplify right side
   1,422.38x = 1,814,719.84
5. Step 5: Solve for x
   x = 1,814,719.84/1,422.38
6. Step 6: Final answer
   x = 1,275.83