Finding the Fourth Proportional to 1,131.53, 1,561.09 and 705.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.53 : 1,561.09 = 705.96 : x
2. Step 2: Convert to fraction form
   1,131.53/1,561.09 = 705.96/x
3. Step 3: Cross multiply
   1,131.53x = 1,561.09 × 705.96
4. Step 4: Simplify right side
   1,131.53x = 1,102,067.10
5. Step 5: Solve for x
   x = 1,102,067.10/1,131.53
6. Step 6: Final answer
   x = 973.96