Finding the Fourth Proportional to 1,749.21, 2,412.81 and 1,040.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,749.21 : 2,412.81 = 1,040.55 : x
2. Step 2: Convert to fraction form
   1,749.21/2,412.81 = 1,040.55/x
3. Step 3: Cross multiply
   1,749.21x = 2,412.81 × 1,040.55
4. Step 4: Simplify right side
   1,749.21x = 2,510,653.50
5. Step 5: Solve for x
   x = 2,510,653.50/1,749.21
6. Step 6: Final answer
   x = 1,435.31