Finding the Fourth Proportional to 1,321.46, 1,981.78 and 1,060.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.46 : 1,981.78 = 1,060.84 : x
2. Step 2: Convert to fraction form
   1,321.46/1,981.78 = 1,060.84/x
3. Step 3: Cross multiply
   1,321.46x = 1,981.78 × 1,060.84
4. Step 4: Simplify right side
   1,321.46x = 2,102,343.89
5. Step 5: Solve for x
   x = 2,102,343.89/1,321.46
6. Step 6: Final answer
   x = 1,590.93