Finding the Fourth Proportional to 1,146.42, 1,581.93 and 971.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.42 : 1,581.93 = 971.46 : x
2. Step 2: Convert to fraction form
   1,146.42/1,581.93 = 971.46/x
3. Step 3: Cross multiply
   1,146.42x = 1,581.93 × 971.46
4. Step 4: Simplify right side
   1,146.42x = 1,536,781.72
5. Step 5: Solve for x
   x = 1,536,781.72/1,146.42
6. Step 6: Final answer
   x = 1,340.50