Finding the Fourth Proportional to 2,312.70, 3,191.67 and 1,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.70 : 3,191.67 = 1,516.50 : x
2. Step 2: Convert to fraction form
   2,312.70/3,191.67 = 1,516.50/x
3. Step 3: Cross multiply
   2,312.70x = 3,191.67 × 1,516.50
4. Step 4: Simplify right side
   2,312.70x = 4,840,167.56
5. Step 5: Solve for x
   x = 4,840,167.56/2,312.70
6. Step 6: Final answer
   x = 2,092.86