Finding the Fourth Proportional to 1,421.85, 1,962.28 and 792.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.85 : 1,962.28 = 792.30 : x
2. Step 2: Convert to fraction form
   1,421.85/1,962.28 = 792.30/x
3. Step 3: Cross multiply
   1,421.85x = 1,962.28 × 792.30
4. Step 4: Simplify right side
   1,421.85x = 1,554,704.93
5. Step 5: Solve for x
   x = 1,554,704.93/1,421.85
6. Step 6: Final answer
   x = 1,093.43