Finding the Fourth Proportional to 1,976.98, 2,723.59 and 1,378.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.98 : 2,723.59 = 1,378.38 : x
2. Step 2: Convert to fraction form
   1,976.98/2,723.59 = 1,378.38/x
3. Step 3: Cross multiply
   1,976.98x = 2,723.59 × 1,378.38
4. Step 4: Simplify right side
   1,976.98x = 3,754,148.75
5. Step 5: Solve for x
   x = 3,754,148.75/1,976.98
6. Step 6: Final answer
   x = 1,898.93