Finding the Fourth Proportional to 1,051.55, 1,451.15 and 609.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.55 : 1,451.15 = 609.56 : x
2. Step 2: Convert to fraction form
   1,051.55/1,451.15 = 609.56/x
3. Step 3: Cross multiply
   1,051.55x = 1,451.15 × 609.56
4. Step 4: Simplify right side
   1,051.55x = 884,552.69
5. Step 5: Solve for x
   x = 884,552.69/1,051.55
6. Step 6: Final answer
   x = 841.19