Finding the Fourth Proportional to 1,346.10, 1,855.71 and 925.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.10 : 1,855.71 = 925.78 : x
2. Step 2: Convert to fraction form
   1,346.10/1,855.71 = 925.78/x
3. Step 3: Cross multiply
   1,346.10x = 1,855.71 × 925.78
4. Step 4: Simplify right side
   1,346.10x = 1,717,974.56
5. Step 5: Solve for x
   x = 1,717,974.56/1,346.10
6. Step 6: Final answer
   x = 1,276.26