Finding the Fourth Proportional to 2,300.65, 3,451.55 and 740.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.65 : 3,451.55 = 740.80 : x
2. Step 2: Convert to fraction form
   2,300.65/3,451.55 = 740.80/x
3. Step 3: Cross multiply
   2,300.65x = 3,451.55 × 740.80
4. Step 4: Simplify right side
   2,300.65x = 2,556,908.24
5. Step 5: Solve for x
   x = 2,556,908.24/2,300.65
6. Step 6: Final answer
   x = 1,111.39