Finding the Fourth Proportional to 2,045.31, 2,820.72 and 1,382.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.31 : 2,820.72 = 1,382.10 : x
2. Step 2: Convert to fraction form
   2,045.31/2,820.72 = 1,382.10/x
3. Step 3: Cross multiply
   2,045.31x = 2,820.72 × 1,382.10
4. Step 4: Simplify right side
   2,045.31x = 3,898,517.11
5. Step 5: Solve for x
   x = 3,898,517.11/2,045.31
6. Step 6: Final answer
   x = 1,906.08