Finding the Fourth Proportional to 1,893.72, 2,612.61 and 1,147.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,893.72 : 2,612.61 = 1,147.17 : x
2. Step 2: Convert to fraction form
   1,893.72/2,612.61 = 1,147.17/x
3. Step 3: Cross multiply
   1,893.72x = 2,612.61 × 1,147.17
4. Step 4: Simplify right side
   1,893.72x = 2,997,107.81
5. Step 5: Solve for x
   x = 2,997,107.81/1,893.72
6. Step 6: Final answer
   x = 1,582.66