Finding the Fourth Proportional to 2,373.61, 3,275.56 and 1,311.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,373.61 : 3,275.56 = 1,311.38 : x
2. Step 2: Convert to fraction form
   2,373.61/3,275.56 = 1,311.38/x
3. Step 3: Cross multiply
   2,373.61x = 3,275.56 × 1,311.38
4. Step 4: Simplify right side
   2,373.61x = 4,295,503.87
5. Step 5: Solve for x
   x = 4,295,503.87/2,373.61
6. Step 6: Final answer
   x = 1,809.69