Finding the Fourth Proportional to 1,211.61, 1,818.27 and 562.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211.61 : 1,818.27 = 562.44 : x
2. Step 2: Convert to fraction form
   1,211.61/1,818.27 = 562.44/x
3. Step 3: Cross multiply
   1,211.61x = 1,818.27 × 562.44
4. Step 4: Simplify right side
   1,211.61x = 1,022,667.78
5. Step 5: Solve for x
   x = 1,022,667.78/1,211.61
6. Step 6: Final answer
   x = 844.06