Finding the Fourth Proportional to 2,613.45, 3,917.76 and 1,131.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.45 : 3,917.76 = 1,131.75 : x
2. Step 2: Convert to fraction form
   2,613.45/3,917.76 = 1,131.75/x
3. Step 3: Cross multiply
   2,613.45x = 3,917.76 × 1,131.75
4. Step 4: Simplify right side
   2,613.45x = 4,433,924.88
5. Step 5: Solve for x
   x = 4,433,924.88/2,613.45
6. Step 6: Final answer
   x = 1,696.58