Finding the Fourth Proportional to 3,374.61, 5,061.86 and 909.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,374.61 : 5,061.86 = 909.69 : x
2. Step 2: Convert to fraction form
   3,374.61/5,061.86 = 909.69/x
3. Step 3: Cross multiply
   3,374.61x = 5,061.86 × 909.69
4. Step 4: Simplify right side
   3,374.61x = 4,604,718.87
5. Step 5: Solve for x
   x = 4,604,718.87/3,374.61
6. Step 6: Final answer
   x = 1,364.52