Finding the Fourth Proportional to 1,162.78, 1,743.72 and 469.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.78 : 1,743.72 = 469.32 : x
2. Step 2: Convert to fraction form
   1,162.78/1,743.72 = 469.32/x
3. Step 3: Cross multiply
   1,162.78x = 1,743.72 × 469.32
4. Step 4: Simplify right side
   1,162.78x = 818,360.91
5. Step 5: Solve for x
   x = 818,360.91/1,162.78
6. Step 6: Final answer
   x = 703.80