Finding the Fourth Proportional to 2,051.90, 2,831.54 and 1,155.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.90 : 2,831.54 = 1,155.62 : x
2. Step 2: Convert to fraction form
   2,051.90/2,831.54 = 1,155.62/x
3. Step 3: Cross multiply
   2,051.90x = 2,831.54 × 1,155.62
4. Step 4: Simplify right side
   2,051.90x = 3,272,164.32
5. Step 5: Solve for x
   x = 3,272,164.32/2,051.90
6. Step 6: Final answer
   x = 1,594.70