Finding the Fourth Proportional to 1,529.93, 2,111.81 and 900.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.93 : 2,111.81 = 900.43 : x
2. Step 2: Convert to fraction form
   1,529.93/2,111.81 = 900.43/x
3. Step 3: Cross multiply
   1,529.93x = 2,111.81 × 900.43
4. Step 4: Simplify right side
   1,529.93x = 1,901,527.30
5. Step 5: Solve for x
   x = 1,901,527.30/1,529.93
6. Step 6: Final answer
   x = 1,242.88