Finding the Fourth Proportional to 1,529.30, 2,111.31 and 1,006.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.30 : 2,111.31 = 1,006.23 : x
2. Step 2: Convert to fraction form
   1,529.30/2,111.31 = 1,006.23/x
3. Step 3: Cross multiply
   1,529.30x = 2,111.31 × 1,006.23
4. Step 4: Simplify right side
   1,529.30x = 2,124,463.46
5. Step 5: Solve for x
   x = 2,124,463.46/1,529.30
6. Step 6: Final answer
   x = 1,389.18