Finding the Fourth Proportional to 3,256.17, 4,880.86 and 1,063.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,256.17 : 4,880.86 = 1,063.40 : x
2. Step 2: Convert to fraction form
   3,256.17/4,880.86 = 1,063.40/x
3. Step 3: Cross multiply
   3,256.17x = 4,880.86 × 1,063.40
4. Step 4: Simplify right side
   3,256.17x = 5,190,279.46
5. Step 5: Solve for x
   x = 5,190,279.46/3,256.17
6. Step 6: Final answer
   x = 1,593.98