Finding the Fourth Proportional to 2,598.54, 3,900.01 and 1,039.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.54 : 3,900.01 = 1,039.64 : x
2. Step 2: Convert to fraction form
   2,598.54/3,900.01 = 1,039.64/x
3. Step 3: Cross multiply
   2,598.54x = 3,900.01 × 1,039.64
4. Step 4: Simplify right side
   2,598.54x = 4,054,606.40
5. Step 5: Solve for x
   x = 4,054,606.40/2,598.54
6. Step 6: Final answer
   x = 1,560.34