Finding the Fourth Proportional to 1,433.78, 1,977.50 and 961.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.78 : 1,977.50 = 961.52 : x
2. Step 2: Convert to fraction form
   1,433.78/1,977.50 = 961.52/x
3. Step 3: Cross multiply
   1,433.78x = 1,977.50 × 961.52
4. Step 4: Simplify right side
   1,433.78x = 1,901,391.10
5. Step 5: Solve for x
   x = 1,901,391.10/1,433.78
6. Step 6: Final answer
   x = 1,326.14