Finding the Fourth Proportional to 2,111.06, 2,913.37 and 1,272.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.06 : 2,913.37 = 1,272.03 : x
2. Step 2: Convert to fraction form
   2,111.06/2,913.37 = 1,272.03/x
3. Step 3: Cross multiply
   2,111.06x = 2,913.37 × 1,272.03
4. Step 4: Simplify right side
   2,111.06x = 3,705,894.04
5. Step 5: Solve for x
   x = 3,705,894.04/2,111.06
6. Step 6: Final answer
   x = 1,755.47