Finding the Fourth Proportional to 1,105.69, 1,525.82 and 712.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.69 : 1,525.82 = 712.94 : x
2. Step 2: Convert to fraction form
   1,105.69/1,525.82 = 712.94/x
3. Step 3: Cross multiply
   1,105.69x = 1,525.82 × 712.94
4. Step 4: Simplify right side
   1,105.69x = 1,087,818.11
5. Step 5: Solve for x
   x = 1,087,818.11/1,105.69
6. Step 6: Final answer
   x = 983.84