Finding the Fourth Proportional to 2,426.51, 3,640.54 and 866.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.51 : 3,640.54 = 866.48 : x
2. Step 2: Convert to fraction form
   2,426.51/3,640.54 = 866.48/x
3. Step 3: Cross multiply
   2,426.51x = 3,640.54 × 866.48
4. Step 4: Simplify right side
   2,426.51x = 3,154,462.03
5. Step 5: Solve for x
   x = 3,154,462.03/2,426.51
6. Step 6: Final answer
   x = 1,300.00