Finding the Fourth Proportional to 2,613.86, 3,607.07 and 1,434.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.86 : 3,607.07 = 1,434.90 : x
2. Step 2: Convert to fraction form
   2,613.86/3,607.07 = 1,434.90/x
3. Step 3: Cross multiply
   2,613.86x = 3,607.07 × 1,434.90
4. Step 4: Simplify right side
   2,613.86x = 5,175,777.57
5. Step 5: Solve for x
   x = 5,175,777.57/2,613.86
6. Step 6: Final answer
   x = 1,980.13