Finding the Fourth Proportional to 1,421.86, 1,961.98 and 792.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.86 : 1,961.98 = 792.34 : x
2. Step 2: Convert to fraction form
   1,421.86/1,961.98 = 792.34/x
3. Step 3: Cross multiply
   1,421.86x = 1,961.98 × 792.34
4. Step 4: Simplify right side
   1,421.86x = 1,554,555.23
5. Step 5: Solve for x
   x = 1,554,555.23/1,421.86
6. Step 6: Final answer
   x = 1,093.33