Finding the Fourth Proportional to 2,383.38, 3,570.20 and 1,407.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.38 : 3,570.20 = 1,407.12 : x
2. Step 2: Convert to fraction form
   2,383.38/3,570.20 = 1,407.12/x
3. Step 3: Cross multiply
   2,383.38x = 3,570.20 × 1,407.12
4. Step 4: Simplify right side
   2,383.38x = 5,023,699.82
5. Step 5: Solve for x
   x = 5,023,699.82/2,383.38
6. Step 6: Final answer
   x = 2,107.80