Finding the Fourth Proportional to 1,471.56, 2,030.72 and 808.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,471.56 : 2,030.72 = 808.38 : x
2. Step 2: Convert to fraction form
   1,471.56/2,030.72 = 808.38/x
3. Step 3: Cross multiply
   1,471.56x = 2,030.72 × 808.38
4. Step 4: Simplify right side
   1,471.56x = 1,641,593.43
5. Step 5: Solve for x
   x = 1,641,593.43/1,471.56
6. Step 6: Final answer
   x = 1,115.55