Finding the Fourth Proportional to 1,805.16, 2,484.70 and 1,280.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.16 : 2,484.70 = 1,280.28 : x
2. Step 2: Convert to fraction form
   1,805.16/2,484.70 = 1,280.28/x
3. Step 3: Cross multiply
   1,805.16x = 2,484.70 × 1,280.28
4. Step 4: Simplify right side
   1,805.16x = 3,181,111.72
5. Step 5: Solve for x
   x = 3,181,111.72/1,805.16
6. Step 6: Final answer
   x = 1,762.23