Finding the Fourth Proportional to 1,306.16, 1,970.89 and 1,255.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,306.16 : 1,970.89 = 1,255.53 : x
2. Step 2: Convert to fraction form
   1,306.16/1,970.89 = 1,255.53/x
3. Step 3: Cross multiply
   1,306.16x = 1,970.89 × 1,255.53
4. Step 4: Simplify right side
   1,306.16x = 2,474,510.17
5. Step 5: Solve for x
   x = 2,474,510.17/1,306.16
6. Step 6: Final answer
   x = 1,894.50