Finding the Fourth Proportional to 1,123.69, 1,685.55 and 474.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.69 : 1,685.55 = 474.01 : x
2. Step 2: Convert to fraction form
   1,123.69/1,685.55 = 474.01/x
3. Step 3: Cross multiply
   1,123.69x = 1,685.55 × 474.01
4. Step 4: Simplify right side
   1,123.69x = 798,967.56
5. Step 5: Solve for x
   x = 798,967.56/1,123.69
6. Step 6: Final answer
   x = 711.02