Finding the Fourth Proportional to 2,430.08, 3,642.96 and 890.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,430.08 : 3,642.96 = 890.72 : x
2. Step 2: Convert to fraction form
   2,430.08/3,642.96 = 890.72/x
3. Step 3: Cross multiply
   2,430.08x = 3,642.96 × 890.72
4. Step 4: Simplify right side
   2,430.08x = 3,244,857.33
5. Step 5: Solve for x
   x = 3,244,857.33/2,430.08
6. Step 6: Final answer
   x = 1,335.29