Finding the Fourth Proportional to 1,123.22, 1,550.61 and 703.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.22 : 1,550.61 = 703.81 : x
2. Step 2: Convert to fraction form
   1,123.22/1,550.61 = 703.81/x
3. Step 3: Cross multiply
   1,123.22x = 1,550.61 × 703.81
4. Step 4: Simplify right side
   1,123.22x = 1,091,334.82
5. Step 5: Solve for x
   x = 1,091,334.82/1,123.22
6. Step 6: Final answer
   x = 971.61