Finding the Fourth Proportional to 1,100.41, 1,648.08 and 612.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.41 : 1,648.08 = 612.38 : x
2. Step 2: Convert to fraction form
   1,100.41/1,648.08 = 612.38/x
3. Step 3: Cross multiply
   1,100.41x = 1,648.08 × 612.38
4. Step 4: Simplify right side
   1,100.41x = 1,009,255.35
5. Step 5: Solve for x
   x = 1,009,255.35/1,100.41
6. Step 6: Final answer
   x = 917.17