Finding the Fourth Proportional to 1,980.85, 2,733.54 and 1,141.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.85 : 2,733.54 = 1,141.55 : x
2. Step 2: Convert to fraction form
   1,980.85/2,733.54 = 1,141.55/x
3. Step 3: Cross multiply
   1,980.85x = 2,733.54 × 1,141.55
4. Step 4: Simplify right side
   1,980.85x = 3,120,472.59
5. Step 5: Solve for x
   x = 3,120,472.59/1,980.85
6. Step 6: Final answer
   x = 1,575.32