Finding the Fourth Proportional to 1,633.88, 2,453.31 and 1,021.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,633.88 : 2,453.31 = 1,021.46 : x
2. Step 2: Convert to fraction form
   1,633.88/2,453.31 = 1,021.46/x
3. Step 3: Cross multiply
   1,633.88x = 2,453.31 × 1,021.46
4. Step 4: Simplify right side
   1,633.88x = 2,505,945.77
5. Step 5: Solve for x
   x = 2,505,945.77/1,633.88
6. Step 6: Final answer
   x = 1,533.74