Finding the Fourth Proportional to 1,436.88, 2,155.59 and 462.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.88 : 2,155.59 = 462.72 : x
2. Step 2: Convert to fraction form
   1,436.88/2,155.59 = 462.72/x
3. Step 3: Cross multiply
   1,436.88x = 2,155.59 × 462.72
4. Step 4: Simplify right side
   1,436.88x = 997,434.60
5. Step 5: Solve for x
   x = 997,434.60/1,436.88
6. Step 6: Final answer
   x = 694.17