Finding the Fourth Proportional to 2,607.09, 3,597.87 and 1,428.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.09 : 3,597.87 = 1,428.17 : x
2. Step 2: Convert to fraction form
   2,607.09/3,597.87 = 1,428.17/x
3. Step 3: Cross multiply
   2,607.09x = 3,597.87 × 1,428.17
4. Step 4: Simplify right side
   2,607.09x = 5,138,352.01
5. Step 5: Solve for x
   x = 5,138,352.01/2,607.09
6. Step 6: Final answer
   x = 1,970.91