Finding the Fourth Proportional to 2,613.98, 3,607.29 and 1,435.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.98 : 3,607.29 = 1,435.07 : x
2. Step 2: Convert to fraction form
   2,613.98/3,607.29 = 1,435.07/x
3. Step 3: Cross multiply
   2,613.98x = 3,607.29 × 1,435.07
4. Step 4: Simplify right side
   2,613.98x = 5,176,713.66
5. Step 5: Solve for x
   x = 5,176,713.66/2,613.98
6. Step 6: Final answer
   x = 1,980.40