Finding the Fourth Proportional to 1,410.41, 1,945.72 and 913.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.41 : 1,945.72 = 913.21 : x
2. Step 2: Convert to fraction form
   1,410.41/1,945.72 = 913.21/x
3. Step 3: Cross multiply
   1,410.41x = 1,945.72 × 913.21
4. Step 4: Simplify right side
   1,410.41x = 1,776,853.54
5. Step 5: Solve for x
   x = 1,776,853.54/1,410.41
6. Step 6: Final answer
   x = 1,259.81