Finding the Fourth Proportional to 2,831.42, 4,245.76 and 1,187.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.42 : 4,245.76 = 1,187.52 : x
2. Step 2: Convert to fraction form
   2,831.42/4,245.76 = 1,187.52/x
3. Step 3: Cross multiply
   2,831.42x = 4,245.76 × 1,187.52
4. Step 4: Simplify right side
   2,831.42x = 5,041,918.98
5. Step 5: Solve for x
   x = 5,041,918.98/2,831.42
6. Step 6: Final answer
   x = 1,780.71