Finding the Fourth Proportional to 1,111.02, 1,667.73 and 462.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.02 : 1,667.73 = 462.21 : x
2. Step 2: Convert to fraction form
   1,111.02/1,667.73 = 462.21/x
3. Step 3: Cross multiply
   1,111.02x = 1,667.73 × 462.21
4. Step 4: Simplify right side
   1,111.02x = 770,841.48
5. Step 5: Solve for x
   x = 770,841.48/1,111.02
6. Step 6: Final answer
   x = 693.81