Finding the Fourth Proportional to 1,896.72, 2,618.52 and 1,310.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.72 : 2,618.52 = 1,310.42 : x
2. Step 2: Convert to fraction form
   1,896.72/2,618.52 = 1,310.42/x
3. Step 3: Cross multiply
   1,896.72x = 2,618.52 × 1,310.42
4. Step 4: Simplify right side
   1,896.72x = 3,431,360.98
5. Step 5: Solve for x
   x = 3,431,360.98/1,896.72
6. Step 6: Final answer
   x = 1,809.10