Finding the Fourth Proportional to 1,715.76, 2,367.54 and 1,191.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,715.76 : 2,367.54 = 1,191.96 : x
2. Step 2: Convert to fraction form
   1,715.76/2,367.54 = 1,191.96/x
3. Step 3: Cross multiply
   1,715.76x = 2,367.54 × 1,191.96
4. Step 4: Simplify right side
   1,715.76x = 2,822,012.98
5. Step 5: Solve for x
   x = 2,822,012.98/1,715.76
6. Step 6: Final answer
   x = 1,644.76