Finding the Fourth Proportional to 1,314.36, 1,968.71 and 619.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.36 : 1,968.71 = 619.98 : x
2. Step 2: Convert to fraction form
   1,314.36/1,968.71 = 619.98/x
3. Step 3: Cross multiply
   1,314.36x = 1,968.71 × 619.98
4. Step 4: Simplify right side
   1,314.36x = 1,220,557.73
5. Step 5: Solve for x
   x = 1,220,557.73/1,314.36
6. Step 6: Final answer
   x = 928.63