Finding the Fourth Proportional to 1,529.70, 2,111.34 and 900.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.70 : 2,111.34 = 900.30 : x
2. Step 2: Convert to fraction form
   1,529.70/2,111.34 = 900.30/x
3. Step 3: Cross multiply
   1,529.70x = 2,111.34 × 900.30
4. Step 4: Simplify right side
   1,529.70x = 1,900,839.40
5. Step 5: Solve for x
   x = 1,900,839.40/1,529.70
6. Step 6: Final answer
   x = 1,242.62