Finding the Fourth Proportional to 1,345.55, 2,018.52 and 760.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.55 : 2,018.52 = 760.73 : x
2. Step 2: Convert to fraction form
   1,345.55/2,018.52 = 760.73/x
3. Step 3: Cross multiply
   1,345.55x = 2,018.52 × 760.73
4. Step 4: Simplify right side
   1,345.55x = 1,535,538.63
5. Step 5: Solve for x
   x = 1,535,538.63/1,345.55
6. Step 6: Final answer
   x = 1,141.20