Finding the Fourth Proportional to 1,100.74, 1,651.12 and 279.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.74 : 1,651.12 = 279.02 : x
2. Step 2: Convert to fraction form
   1,100.74/1,651.12 = 279.02/x
3. Step 3: Cross multiply
   1,100.74x = 1,651.12 × 279.02
4. Step 4: Simplify right side
   1,100.74x = 460,695.50
5. Step 5: Solve for x
   x = 460,695.50/1,100.74
6. Step 6: Final answer
   x = 418.53