Finding the Fourth Proportional to 2,150.98, 2,968.16 and 1,311.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.98 : 2,968.16 = 1,311.93 : x
2. Step 2: Convert to fraction form
   2,150.98/2,968.16 = 1,311.93/x
3. Step 3: Cross multiply
   2,150.98x = 2,968.16 × 1,311.93
4. Step 4: Simplify right side
   2,150.98x = 3,894,018.15
5. Step 5: Solve for x
   x = 3,894,018.15/2,150.98
6. Step 6: Final answer
   x = 1,810.35