Finding the Fourth Proportional to 1,722.35, 2,376.89 and 976.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.35 : 2,376.89 = 976.28 : x
2. Step 2: Convert to fraction form
   1,722.35/2,376.89 = 976.28/x
3. Step 3: Cross multiply
   1,722.35x = 2,376.89 × 976.28
4. Step 4: Simplify right side
   1,722.35x = 2,320,510.17
5. Step 5: Solve for x
   x = 2,320,510.17/1,722.35
6. Step 6: Final answer
   x = 1,347.29