Finding the Fourth Proportional to 2,598.72, 3,900.78 and 1,505.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.72 : 3,900.78 = 1,505.22 : x
2. Step 2: Convert to fraction form
   2,598.72/3,900.78 = 1,505.22/x
3. Step 3: Cross multiply
   2,598.72x = 3,900.78 × 1,505.22
4. Step 4: Simplify right side
   2,598.72x = 5,871,532.07
5. Step 5: Solve for x
   x = 5,871,532.07/2,598.72
6. Step 6: Final answer
   x = 2,259.39