Finding the Fourth Proportional to 2,613.99, 3,607.31 and 1,435.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.99 : 3,607.31 = 1,435.06 : x
2. Step 2: Convert to fraction form
   2,613.99/3,607.31 = 1,435.06/x
3. Step 3: Cross multiply
   2,613.99x = 3,607.31 × 1,435.06
4. Step 4: Simplify right side
   2,613.99x = 5,176,706.29
5. Step 5: Solve for x
   x = 5,176,706.29/2,613.99
6. Step 6: Final answer
   x = 1,980.38