Finding the Fourth Proportional to 1,372.59, 1,895.67 and 931.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.59 : 1,895.67 = 931.68 : x
2. Step 2: Convert to fraction form
   1,372.59/1,895.67 = 931.68/x
3. Step 3: Cross multiply
   1,372.59x = 1,895.67 × 931.68
4. Step 4: Simplify right side
   1,372.59x = 1,766,157.83
5. Step 5: Solve for x
   x = 1,766,157.83/1,372.59
6. Step 6: Final answer
   x = 1,286.73