Finding the Fourth Proportional to 2,038.83, 2,815.10 and 1,803.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.83 : 2,815.10 = 1,803.05 : x
2. Step 2: Convert to fraction form
   2,038.83/2,815.10 = 1,803.05/x
3. Step 3: Cross multiply
   2,038.83x = 2,815.10 × 1,803.05
4. Step 4: Simplify right side
   2,038.83x = 5,075,742.96
5. Step 5: Solve for x
   x = 5,075,742.96/2,038.83
6. Step 6: Final answer
   x = 2,489.54