Finding the Fourth Proportional to 2,018.93, 2,788.93 and 1,920.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.93 : 2,788.93 = 1,920.40 : x
2. Step 2: Convert to fraction form
   2,018.93/2,788.93 = 1,920.40/x
3. Step 3: Cross multiply
   2,018.93x = 2,788.93 × 1,920.40
4. Step 4: Simplify right side
   2,018.93x = 5,355,861.17
5. Step 5: Solve for x
   x = 5,355,861.17/2,018.93
6. Step 6: Final answer
   x = 2,652.82