Finding the Fourth Proportional to 2,011.69, 3,017.49 and 916.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.69 : 3,017.49 = 916.35 : x
2. Step 2: Convert to fraction form
   2,011.69/3,017.49 = 916.35/x
3. Step 3: Cross multiply
   2,011.69x = 3,017.49 × 916.35
4. Step 4: Simplify right side
   2,011.69x = 2,765,061.87
5. Step 5: Solve for x
   x = 2,765,061.87/2,011.69
6. Step 6: Final answer
   x = 1,374.50