Finding the Fourth Proportional to 1,529.77, 2,111.42 and 997.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.77 : 2,111.42 = 997.73 : x
2. Step 2: Convert to fraction form
   1,529.77/2,111.42 = 997.73/x
3. Step 3: Cross multiply
   1,529.77x = 2,111.42 × 997.73
4. Step 4: Simplify right side
   1,529.77x = 2,106,622.09
5. Step 5: Solve for x
   x = 2,106,622.09/1,529.77
6. Step 6: Final answer
   x = 1,377.09