Finding the Fourth Proportional to 1,112.32, 1,667.40 and 462.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.32 : 1,667.40 = 462.70 : x
2. Step 2: Convert to fraction form
   1,112.32/1,667.40 = 462.70/x
3. Step 3: Cross multiply
   1,112.32x = 1,667.40 × 462.70
4. Step 4: Simplify right side
   1,112.32x = 771,505.98
5. Step 5: Solve for x
   x = 771,505.98/1,112.32
6. Step 6: Final answer
   x = 693.60