Finding the Fourth Proportional to 2,155.03, 2,972.79 and 1,270.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.03 : 2,972.79 = 1,270.33 : x
2. Step 2: Convert to fraction form
   2,155.03/2,972.79 = 1,270.33/x
3. Step 3: Cross multiply
   2,155.03x = 2,972.79 × 1,270.33
4. Step 4: Simplify right side
   2,155.03x = 3,776,424.32
5. Step 5: Solve for x
   x = 3,776,424.32/2,155.03
6. Step 6: Final answer
   x = 1,752.38