Finding the Fourth Proportional to 1,316.32, 1,815.89 and 756.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316.32 : 1,815.89 = 756.81 : x
2. Step 2: Convert to fraction form
   1,316.32/1,815.89 = 756.81/x
3. Step 3: Cross multiply
   1,316.32x = 1,815.89 × 756.81
4. Step 4: Simplify right side
   1,316.32x = 1,374,279.93
5. Step 5: Solve for x
   x = 1,374,279.93/1,316.32
6. Step 6: Final answer
   x = 1,044.03