Finding the Fourth Proportional to 2,664.30, 3,996.80 and 1,430.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.30 : 3,996.80 = 1,430.01 : x
2. Step 2: Convert to fraction form
   2,664.30/3,996.80 = 1,430.01/x
3. Step 3: Cross multiply
   2,664.30x = 3,996.80 × 1,430.01
4. Step 4: Simplify right side
   2,664.30x = 5,715,456.82
5. Step 5: Solve for x
   x = 5,715,456.82/2,664.30
6. Step 6: Final answer
   x = 2,145.20