Finding the Fourth Proportional to 2,113.83, 2,916.12 and 1,368.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.83 : 2,916.12 = 1,368.03 : x
2. Step 2: Convert to fraction form
   2,113.83/2,916.12 = 1,368.03/x
3. Step 3: Cross multiply
   2,113.83x = 2,916.12 × 1,368.03
4. Step 4: Simplify right side
   2,113.83x = 3,989,332.80
5. Step 5: Solve for x
   x = 3,989,332.80/2,113.83
6. Step 6: Final answer
   x = 1,887.25