Finding the Fourth Proportional to 1,761.86, 2,431.28 and 975.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.86 : 2,431.28 = 975.89 : x
2. Step 2: Convert to fraction form
   1,761.86/2,431.28 = 975.89/x
3. Step 3: Cross multiply
   1,761.86x = 2,431.28 × 975.89
4. Step 4: Simplify right side
   1,761.86x = 2,372,644.80
5. Step 5: Solve for x
   x = 2,372,644.80/1,761.86
6. Step 6: Final answer
   x = 1,346.67