Finding the Fourth Proportional to 1,314.71, 1,971.54 and 436.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.71 : 1,971.54 = 436.94 : x
2. Step 2: Convert to fraction form
   1,314.71/1,971.54 = 436.94/x
3. Step 3: Cross multiply
   1,314.71x = 1,971.54 × 436.94
4. Step 4: Simplify right side
   1,314.71x = 861,434.83
5. Step 5: Solve for x
   x = 861,434.83/1,314.71
6. Step 6: Final answer
   x = 655.23