Finding the Fourth Proportional to 2,608.02, 3,598.90 and 1,428.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.02 : 3,598.90 = 1,428.84 : x
2. Step 2: Convert to fraction form
   2,608.02/3,598.90 = 1,428.84/x
3. Step 3: Cross multiply
   2,608.02x = 3,598.90 × 1,428.84
4. Step 4: Simplify right side
   2,608.02x = 5,142,252.28
5. Step 5: Solve for x
   x = 5,142,252.28/2,608.02
6. Step 6: Final answer
   x = 1,971.71