Finding the Fourth Proportional to 1,435.31, 1,980.74 and 937.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.31 : 1,980.74 = 937.65 : x
2. Step 2: Convert to fraction form
   1,435.31/1,980.74 = 937.65/x
3. Step 3: Cross multiply
   1,435.31x = 1,980.74 × 937.65
4. Step 4: Simplify right side
   1,435.31x = 1,857,240.86
5. Step 5: Solve for x
   x = 1,857,240.86/1,435.31
6. Step 6: Final answer
   x = 1,293.96