Finding the Fourth Proportional to 2,865.96, 4,300.32 and 1,307.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.96 : 4,300.32 = 1,307.10 : x
2. Step 2: Convert to fraction form
   2,865.96/4,300.32 = 1,307.10/x
3. Step 3: Cross multiply
   2,865.96x = 4,300.32 × 1,307.10
4. Step 4: Simplify right side
   2,865.96x = 5,620,948.27
5. Step 5: Solve for x
   x = 5,620,948.27/2,865.96
6. Step 6: Final answer
   x = 1,961.28