Finding the Fourth Proportional to 2,300.89, 3,449.92 and 1,129.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.89 : 3,449.92 = 1,129.40 : x
2. Step 2: Convert to fraction form
   2,300.89/3,449.92 = 1,129.40/x
3. Step 3: Cross multiply
   2,300.89x = 3,449.92 × 1,129.40
4. Step 4: Simplify right side
   2,300.89x = 3,896,334.00
5. Step 5: Solve for x
   x = 3,896,334.00/2,300.89
6. Step 6: Final answer
   x = 1,693.41