Finding the Fourth Proportional to 2,109.54, 2,911.17 and 1,152.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.54 : 2,911.17 = 1,152.51 : x
2. Step 2: Convert to fraction form
   2,109.54/2,911.17 = 1,152.51/x
3. Step 3: Cross multiply
   2,109.54x = 2,911.17 × 1,152.51
4. Step 4: Simplify right side
   2,109.54x = 3,355,152.54
5. Step 5: Solve for x
   x = 3,355,152.54/2,109.54
6. Step 6: Final answer
   x = 1,590.47