Finding the Fourth Proportional to 1,051.47, 1,451.18 and 632.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.47 : 1,451.18 = 632.05 : x
2. Step 2: Convert to fraction form
   1,051.47/1,451.18 = 632.05/x
3. Step 3: Cross multiply
   1,051.47x = 1,451.18 × 632.05
4. Step 4: Simplify right side
   1,051.47x = 917,218.32
5. Step 5: Solve for x
   x = 917,218.32/1,051.47
6. Step 6: Final answer
   x = 872.32