Finding the Fourth Proportional to 2,113.72, 2,916.32 and 1,367.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.72 : 2,916.32 = 1,367.70 : x
2. Step 2: Convert to fraction form
   2,113.72/2,916.32 = 1,367.70/x
3. Step 3: Cross multiply
   2,113.72x = 2,916.32 × 1,367.70
4. Step 4: Simplify right side
   2,113.72x = 3,988,650.86
5. Step 5: Solve for x
   x = 3,988,650.86/2,113.72
6. Step 6: Final answer
   x = 1,887.03