Finding the Fourth Proportional to 1,400.42, 1,932.50 and 810.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.42 : 1,932.50 = 810.92 : x
2. Step 2: Convert to fraction form
   1,400.42/1,932.50 = 810.92/x
3. Step 3: Cross multiply
   1,400.42x = 1,932.50 × 810.92
4. Step 4: Simplify right side
   1,400.42x = 1,567,102.90
5. Step 5: Solve for x
   x = 1,567,102.90/1,400.42
6. Step 6: Final answer
   x = 1,119.02