Finding the Fourth Proportional to 1,433.32, 1,976.86 and 961.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.32 : 1,976.86 = 961.06 : x
2. Step 2: Convert to fraction form
   1,433.32/1,976.86 = 961.06/x
3. Step 3: Cross multiply
   1,433.32x = 1,976.86 × 961.06
4. Step 4: Simplify right side
   1,433.32x = 1,899,881.07
5. Step 5: Solve for x
   x = 1,899,881.07/1,433.32
6. Step 6: Final answer
   x = 1,325.51