Finding the Fourth Proportional to 1,895.20, 2,613.41 and 1,298.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,895.20 : 2,613.41 = 1,298.55 : x
2. Step 2: Convert to fraction form
   1,895.20/2,613.41 = 1,298.55/x
3. Step 3: Cross multiply
   1,895.20x = 2,613.41 × 1,298.55
4. Step 4: Simplify right side
   1,895.20x = 3,393,643.56
5. Step 5: Solve for x
   x = 3,393,643.56/1,895.20
6. Step 6: Final answer
   x = 1,790.65