Finding the Fourth Proportional to 1,121.02, 1,682.52 and 471.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,121.02 : 1,682.52 = 471.86 : x
2. Step 2: Convert to fraction form
   1,121.02/1,682.52 = 471.86/x
3. Step 3: Cross multiply
   1,121.02x = 1,682.52 × 471.86
4. Step 4: Simplify right side
   1,121.02x = 793,913.89
5. Step 5: Solve for x
   x = 793,913.89/1,121.02
6. Step 6: Final answer
   x = 708.21