Finding the Fourth Proportional to 1,400.67, 1,932.15 and 810.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.67 : 1,932.15 = 810.99 : x
2. Step 2: Convert to fraction form
   1,400.67/1,932.15 = 810.99/x
3. Step 3: Cross multiply
   1,400.67x = 1,932.15 × 810.99
4. Step 4: Simplify right side
   1,400.67x = 1,566,954.33
5. Step 5: Solve for x
   x = 1,566,954.33/1,400.67
6. Step 6: Final answer
   x = 1,118.72