Finding the Fourth Proportional to 2,602.02, 3,898.94 and 1,430.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.02 : 3,898.94 = 1,430.28 : x
2. Step 2: Convert to fraction form
   2,602.02/3,898.94 = 1,430.28/x
3. Step 3: Cross multiply
   2,602.02x = 3,898.94 × 1,430.28
4. Step 4: Simplify right side
   2,602.02x = 5,576,579.72
5. Step 5: Solve for x
   x = 5,576,579.72/2,602.02
6. Step 6: Final answer
   x = 2,143.17