Finding the Fourth Proportional to 1,131.22, 1,561.61 and 758.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.22 : 1,561.61 = 758.44 : x
2. Step 2: Convert to fraction form
   1,131.22/1,561.61 = 758.44/x
3. Step 3: Cross multiply
   1,131.22x = 1,561.61 × 758.44
4. Step 4: Simplify right side
   1,131.22x = 1,184,387.49
5. Step 5: Solve for x
   x = 1,184,387.49/1,131.22
6. Step 6: Final answer
   x = 1,047.00