Finding the Fourth Proportional to 2,887.38, 4,327.90 and 1,131.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.38 : 4,327.90 = 1,131.85 : x
2. Step 2: Convert to fraction form
   2,887.38/4,327.90 = 1,131.85/x
3. Step 3: Cross multiply
   2,887.38x = 4,327.90 × 1,131.85
4. Step 4: Simplify right side
   2,887.38x = 4,898,536.20
5. Step 5: Solve for x
   x = 4,898,536.20/2,887.38
6. Step 6: Final answer
   x = 1,696.53