Finding the Fourth Proportional to 1,582.39, 2,363.72 and 1,172.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,582.39 : 2,363.72 = 1,172.33 : x
2. Step 2: Convert to fraction form
   1,582.39/2,363.72 = 1,172.33/x
3. Step 3: Cross multiply
   1,582.39x = 2,363.72 × 1,172.33
4. Step 4: Simplify right side
   1,582.39x = 2,771,066.47
5. Step 5: Solve for x
   x = 2,771,066.47/1,582.39
6. Step 6: Final answer
   x = 1,751.19