Finding the Fourth Proportional to 1,613.82, 2,421.18 and 792.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.82 : 2,421.18 = 792.34 : x
2. Step 2: Convert to fraction form
   1,613.82/2,421.18 = 792.34/x
3. Step 3: Cross multiply
   1,613.82x = 2,421.18 × 792.34
4. Step 4: Simplify right side
   1,613.82x = 1,918,397.76
5. Step 5: Solve for x
   x = 1,918,397.76/1,613.82
6. Step 6: Final answer
   x = 1,188.73