Finding the Fourth Proportional to 1,131.72, 1,698.06 and 473.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.72 : 1,698.06 = 473.75 : x
2. Step 2: Convert to fraction form
   1,131.72/1,698.06 = 473.75/x
3. Step 3: Cross multiply
   1,131.72x = 1,698.06 × 473.75
4. Step 4: Simplify right side
   1,131.72x = 804,447.21
5. Step 5: Solve for x
   x = 804,447.21/1,131.72
6. Step 6: Final answer
   x = 710.82