Finding the Fourth Proportional to 1,411.02, 1,947.78 and 913.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.02 : 1,947.78 = 913.68 : x
2. Step 2: Convert to fraction form
   1,411.02/1,947.78 = 913.68/x
3. Step 3: Cross multiply
   1,411.02x = 1,947.78 × 913.68
4. Step 4: Simplify right side
   1,411.02x = 1,779,647.63
5. Step 5: Solve for x
   x = 1,779,647.63/1,411.02
6. Step 6: Final answer
   x = 1,261.25