Finding the Fourth Proportional to 2,111.10, 3,168.68 and 1,803.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.10 : 3,168.68 = 1,803.30 : x
2. Step 2: Convert to fraction form
   2,111.10/3,168.68 = 1,803.30/x
3. Step 3: Cross multiply
   2,111.10x = 3,168.68 × 1,803.30
4. Step 4: Simplify right side
   2,111.10x = 5,714,071.63
5. Step 5: Solve for x
   x = 5,714,071.63/2,111.10
6. Step 6: Final answer
   x = 2,706.68