Finding the Fourth Proportional to 1,345.42, 2,018.69 and 760.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.42 : 2,018.69 = 760.49 : x
2. Step 2: Convert to fraction form
   1,345.42/2,018.69 = 760.49/x
3. Step 3: Cross multiply
   1,345.42x = 2,018.69 × 760.49
4. Step 4: Simplify right side
   1,345.42x = 1,535,193.56
5. Step 5: Solve for x
   x = 1,535,193.56/1,345.42
6. Step 6: Final answer
   x = 1,141.05