Finding the Fourth Proportional to 1,141.86, 1,711.88 and 1,077.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.86 : 1,711.88 = 1,077.47 : x
2. Step 2: Convert to fraction form
   1,141.86/1,711.88 = 1,077.47/x
3. Step 3: Cross multiply
   1,141.86x = 1,711.88 × 1,077.47
4. Step 4: Simplify right side
   1,141.86x = 1,844,485.40
5. Step 5: Solve for x
   x = 1,844,485.40/1,141.86
6. Step 6: Final answer
   x = 1,615.33