Finding the Fourth Proportional to 1,438.51, 2,156.27 and 976.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438.51 : 2,156.27 = 976.33 : x
2. Step 2: Convert to fraction form
   1,438.51/2,156.27 = 976.33/x
3. Step 3: Cross multiply
   1,438.51x = 2,156.27 × 976.33
4. Step 4: Simplify right side
   1,438.51x = 2,105,224.48
5. Step 5: Solve for x
   x = 2,105,224.48/1,438.51
6. Step 6: Final answer
   x = 1,463.47