Finding the Fourth Proportional to 1,722.59, 2,377.05 and 976.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.59 : 2,377.05 = 976.48 : x
2. Step 2: Convert to fraction form
   1,722.59/2,377.05 = 976.48/x
3. Step 3: Cross multiply
   1,722.59x = 2,377.05 × 976.48
4. Step 4: Simplify right side
   1,722.59x = 2,321,141.78
5. Step 5: Solve for x
   x = 2,321,141.78/1,722.59
6. Step 6: Final answer
   x = 1,347.47