Finding the Fourth Proportional to 1,111.79, 1,667.35 and 462.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.79 : 1,667.35 = 462.38 : x
2. Step 2: Convert to fraction form
   1,111.79/1,667.35 = 462.38/x
3. Step 3: Cross multiply
   1,111.79x = 1,667.35 × 462.38
4. Step 4: Simplify right side
   1,111.79x = 770,941.53
5. Step 5: Solve for x
   x = 770,941.53/1,111.79
6. Step 6: Final answer
   x = 693.42