Finding the Fourth Proportional to 1,053.51, 1,453.56 and 633.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.51 : 1,453.56 = 633.72 : x
2. Step 2: Convert to fraction form
   1,053.51/1,453.56 = 633.72/x
3. Step 3: Cross multiply
   1,053.51x = 1,453.56 × 633.72
4. Step 4: Simplify right side
   1,053.51x = 921,150.04
5. Step 5: Solve for x
   x = 921,150.04/1,053.51
6. Step 6: Final answer
   x = 874.36