Finding the Fourth Proportional to 1,407.12, 1,941.21 and 965.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.12 : 1,941.21 = 965.58 : x
2. Step 2: Convert to fraction form
   1,407.12/1,941.21 = 965.58/x
3. Step 3: Cross multiply
   1,407.12x = 1,941.21 × 965.58
4. Step 4: Simplify right side
   1,407.12x = 1,874,393.55
5. Step 5: Solve for x
   x = 1,874,393.55/1,407.12
6. Step 6: Final answer
   x = 1,332.08