Finding the Fourth Proportional to 3,886.74, 5,830.05 and 965.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.74 : 5,830.05 = 965.07 : x
2. Step 2: Convert to fraction form
   3,886.74/5,830.05 = 965.07/x
3. Step 3: Cross multiply
   3,886.74x = 5,830.05 × 965.07
4. Step 4: Simplify right side
   3,886.74x = 5,626,406.35
5. Step 5: Solve for x
   x = 5,626,406.35/3,886.74
6. Step 6: Final answer
   x = 1,447.59