Finding the Fourth Proportional to 1,400.05, 1,932.16 and 810.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.05 : 1,932.16 = 810.59 : x
2. Step 2: Convert to fraction form
   1,400.05/1,932.16 = 810.59/x
3. Step 3: Cross multiply
   1,400.05x = 1,932.16 × 810.59
4. Step 4: Simplify right side
   1,400.05x = 1,566,179.91
5. Step 5: Solve for x
   x = 1,566,179.91/1,400.05
6. Step 6: Final answer
   x = 1,118.66