Finding the Fourth Proportional to 1,473.91, 2,033.86 and 810.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,473.91 : 2,033.86 = 810.78 : x
2. Step 2: Convert to fraction form
   1,473.91/2,033.86 = 810.78/x
3. Step 3: Cross multiply
   1,473.91x = 2,033.86 × 810.78
4. Step 4: Simplify right side
   1,473.91x = 1,649,013.01
5. Step 5: Solve for x
   x = 1,649,013.01/1,473.91
6. Step 6: Final answer
   x = 1,118.80