Finding the Fourth Proportional to 2,607.16, 3,597.88 and 1,428.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.16 : 3,597.88 = 1,428.23 : x
2. Step 2: Convert to fraction form
   2,607.16/3,597.88 = 1,428.23/x
3. Step 3: Cross multiply
   2,607.16x = 3,597.88 × 1,428.23
4. Step 4: Simplify right side
   2,607.16x = 5,138,600.15
5. Step 5: Solve for x
   x = 5,138,600.15/2,607.16
6. Step 6: Final answer
   x = 1,970.96