Finding the Fourth Proportional to 2,915.49, 4,370.61 and 1,065.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,915.49 : 4,370.61 = 1,065.31 : x
2. Step 2: Convert to fraction form
   2,915.49/4,370.61 = 1,065.31/x
3. Step 3: Cross multiply
   2,915.49x = 4,370.61 × 1,065.31
4. Step 4: Simplify right side
   2,915.49x = 4,656,054.54
5. Step 5: Solve for x
   x = 4,656,054.54/2,915.49
6. Step 6: Final answer
   x = 1,597.01