Finding the Fourth Proportional to 1,421.69, 1,961.88 and 792.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.69 : 1,961.88 = 792.25 : x
2. Step 2: Convert to fraction form
   1,421.69/1,961.88 = 792.25/x
3. Step 3: Cross multiply
   1,421.69x = 1,961.88 × 792.25
4. Step 4: Simplify right side
   1,421.69x = 1,554,296.01
5. Step 5: Solve for x
   x = 1,554,296.01/1,421.69
6. Step 6: Final answer
   x = 1,093.27