Finding the Fourth Proportional to 1,303.17, 1,945.22 and 1,131.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,303.17 : 1,945.22 = 1,131.05 : x
2. Step 2: Convert to fraction form
   1,303.17/1,945.22 = 1,131.05/x
3. Step 3: Cross multiply
   1,303.17x = 1,945.22 × 1,131.05
4. Step 4: Simplify right side
   1,303.17x = 2,200,134.18
5. Step 5: Solve for x
   x = 2,200,134.18/1,303.17
6. Step 6: Final answer
   x = 1,688.29