Finding the Fourth Proportional to 2,607.06, 3,597.76 and 1,428.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.06 : 3,597.76 = 1,428.24 : x
2. Step 2: Convert to fraction form
   2,607.06/3,597.76 = 1,428.24/x
3. Step 3: Cross multiply
   2,607.06x = 3,597.76 × 1,428.24
4. Step 4: Simplify right side
   2,607.06x = 5,138,464.74
5. Step 5: Solve for x
   x = 5,138,464.74/2,607.06
6. Step 6: Final answer
   x = 1,970.98