Finding the Fourth Proportional to 1,051.79, 1,451.42 and 609.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.79 : 1,451.42 = 609.83 : x
2. Step 2: Convert to fraction form
   1,051.79/1,451.42 = 609.83/x
3. Step 3: Cross multiply
   1,051.79x = 1,451.42 × 609.83
4. Step 4: Simplify right side
   1,051.79x = 885,119.46
5. Step 5: Solve for x
   x = 885,119.46/1,051.79
6. Step 6: Final answer
   x = 841.54