Finding the Fourth Proportional to 1,051.85, 1,451.81 and 609.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.85 : 1,451.81 = 609.69 : x
2. Step 2: Convert to fraction form
   1,051.85/1,451.81 = 609.69/x
3. Step 3: Cross multiply
   1,051.85x = 1,451.81 × 609.69
4. Step 4: Simplify right side
   1,051.85x = 885,155.56
5. Step 5: Solve for x
   x = 885,155.56/1,051.85
6. Step 6: Final answer
   x = 841.52