Finding the Fourth Proportional to 1,047.42, 1,571.52 and 469.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.42 : 1,571.52 = 469.86 : x
2. Step 2: Convert to fraction form
   1,047.42/1,571.52 = 469.86/x
3. Step 3: Cross multiply
   1,047.42x = 1,571.52 × 469.86
4. Step 4: Simplify right side
   1,047.42x = 738,394.39
5. Step 5: Solve for x
   x = 738,394.39/1,047.42
6. Step 6: Final answer
   x = 704.96