Finding the Fourth Proportional to 1,012.10, 1,518.55 and 362.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.10 : 1,518.55 = 362.88 : x
2. Step 2: Convert to fraction form
   1,012.10/1,518.55 = 362.88/x
3. Step 3: Cross multiply
   1,012.10x = 1,518.55 × 362.88
4. Step 4: Simplify right side
   1,012.10x = 551,050.52
5. Step 5: Solve for x
   x = 551,050.52/1,012.10
6. Step 6: Final answer
   x = 544.47