Finding the Fourth Proportional to 1,347.61, 1,859.70 and 758.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.61 : 1,859.70 = 758.15 : x
2. Step 2: Convert to fraction form
   1,347.61/1,859.70 = 758.15/x
3. Step 3: Cross multiply
   1,347.61x = 1,859.70 × 758.15
4. Step 4: Simplify right side
   1,347.61x = 1,409,931.56
5. Step 5: Solve for x
   x = 1,409,931.56/1,347.61
6. Step 6: Final answer
   x = 1,046.25