Finding the Fourth Proportional to 2,051.30, 2,831.55 and 1,555.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.30 : 2,831.55 = 1,555.04 : x
2. Step 2: Convert to fraction form
   2,051.30/2,831.55 = 1,555.04/x
3. Step 3: Cross multiply
   2,051.30x = 2,831.55 × 1,555.04
4. Step 4: Simplify right side
   2,051.30x = 4,403,173.51
5. Step 5: Solve for x
   x = 4,403,173.51/2,051.30
6. Step 6: Final answer
   x = 2,146.53