Finding the Fourth Proportional to 1,141.19, 1,574.18 and 768.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.19 : 1,574.18 = 768.69 : x
2. Step 2: Convert to fraction form
   1,141.19/1,574.18 = 768.69/x
3. Step 3: Cross multiply
   1,141.19x = 1,574.18 × 768.69
4. Step 4: Simplify right side
   1,141.19x = 1,210,048.55
5. Step 5: Solve for x
   x = 1,210,048.55/1,141.19
6. Step 6: Final answer
   x = 1,060.34