Finding the Fourth Proportional to 943.74, 1,302.50 and 786.15

Step by Step Solution

1. Step 1: Write the proportion equation
   943.74 : 1,302.50 = 786.15 : x
2. Step 2: Convert to fraction form
   943.74/1,302.50 = 786.15/x
3. Step 3: Cross multiply
   943.74x = 1,302.50 × 786.15
4. Step 4: Simplify right side
   943.74x = 1,023,960.38
5. Step 5: Solve for x
   x = 1,023,960.38/943.74
6. Step 6: Final answer
   x = 1,085.00