Finding the Fourth Proportional to 1,346.79, 1,858.61 and 757.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.79 : 1,858.61 = 757.31 : x
2. Step 2: Convert to fraction form
   1,346.79/1,858.61 = 757.31/x
3. Step 3: Cross multiply
   1,346.79x = 1,858.61 × 757.31
4. Step 4: Simplify right side
   1,346.79x = 1,407,543.94
5. Step 5: Solve for x
   x = 1,407,543.94/1,346.79
6. Step 6: Final answer
   x = 1,045.11