Finding the Fourth Proportional to 2,613.90, 3,607.07 and 1,434.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.90 : 3,607.07 = 1,434.99 : x
2. Step 2: Convert to fraction form
   2,613.90/3,607.07 = 1,434.99/x
3. Step 3: Cross multiply
   2,613.90x = 3,607.07 × 1,434.99
4. Step 4: Simplify right side
   2,613.90x = 5,176,111.22
5. Step 5: Solve for x
   x = 5,176,111.22/2,613.90
6. Step 6: Final answer
   x = 1,980.22