Finding the Fourth Proportional to 3,374.72, 5,062.06 and 909.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,374.72 : 5,062.06 = 909.78 : x
2. Step 2: Convert to fraction form
   3,374.72/5,062.06 = 909.78/x
3. Step 3: Cross multiply
   3,374.72x = 5,062.06 × 909.78
4. Step 4: Simplify right side
   3,374.72x = 4,605,385.81
5. Step 5: Solve for x
   x = 4,605,385.81/3,374.72
6. Step 6: Final answer
   x = 1,364.67