Finding the Fourth Proportional to 1,381.59, 1,906.52 and 760.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.59 : 1,906.52 = 760.59 : x
2. Step 2: Convert to fraction form
   1,381.59/1,906.52 = 760.59/x
3. Step 3: Cross multiply
   1,381.59x = 1,906.52 × 760.59
4. Step 4: Simplify right side
   1,381.59x = 1,450,076.24
5. Step 5: Solve for x
   x = 1,450,076.24/1,381.59
6. Step 6: Final answer
   x = 1,049.57