Finding the Fourth Proportional to 2,613.96, 3,607.38 and 1,435.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.96 : 3,607.38 = 1,435.05 : x
2. Step 2: Convert to fraction form
   2,613.96/3,607.38 = 1,435.05/x
3. Step 3: Cross multiply
   2,613.96x = 3,607.38 × 1,435.05
4. Step 4: Simplify right side
   2,613.96x = 5,176,770.67
5. Step 5: Solve for x
   x = 5,176,770.67/2,613.96
6. Step 6: Final answer
   x = 1,980.43