Finding the Fourth Proportional to 1,314.27, 1,971.55 and 436.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.27 : 1,971.55 = 436.84 : x
2. Step 2: Convert to fraction form
   1,314.27/1,971.55 = 436.84/x
3. Step 3: Cross multiply
   1,314.27x = 1,971.55 × 436.84
4. Step 4: Simplify right side
   1,314.27x = 861,251.90
5. Step 5: Solve for x
   x = 861,251.90/1,314.27
6. Step 6: Final answer
   x = 655.31