Finding the Fourth Proportional to 2,563.83, 3,837.80 and 1,390.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563.83 : 3,837.80 = 1,390.93 : x
2. Step 2: Convert to fraction form
   2,563.83/3,837.80 = 1,390.93/x
3. Step 3: Cross multiply
   2,563.83x = 3,837.80 × 1,390.93
4. Step 4: Simplify right side
   2,563.83x = 5,338,105.04
5. Step 5: Solve for x
   x = 5,338,105.04/2,563.83
6. Step 6: Final answer
   x = 2,082.08