Finding the Fourth Proportional to 1,916.01, 2,874.47 and 1,039.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.01 : 2,874.47 = 1,039.10 : x
2. Step 2: Convert to fraction form
   1,916.01/2,874.47 = 1,039.10/x
3. Step 3: Cross multiply
   1,916.01x = 2,874.47 × 1,039.10
4. Step 4: Simplify right side
   1,916.01x = 2,986,842.21
5. Step 5: Solve for x
   x = 2,986,842.21/1,916.01
6. Step 6: Final answer
   x = 1,558.89