Finding the Fourth Proportional to 1,917.38, 2,646.01 and 1,131.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.38 : 2,646.01 = 1,131.43 : x
2. Step 2: Convert to fraction form
   1,917.38/2,646.01 = 1,131.43/x
3. Step 3: Cross multiply
   1,917.38x = 2,646.01 × 1,131.43
4. Step 4: Simplify right side
   1,917.38x = 2,993,761.86
5. Step 5: Solve for x
   x = 2,993,761.86/1,917.38
6. Step 6: Final answer
   x = 1,561.39