Finding the Fourth Proportional to 2,321.91, 3,483.06 and 761.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.91 : 3,483.06 = 761.88 : x
2. Step 2: Convert to fraction form
   2,321.91/3,483.06 = 761.88/x
3. Step 3: Cross multiply
   2,321.91x = 3,483.06 × 761.88
4. Step 4: Simplify right side
   2,321.91x = 2,653,673.75
5. Step 5: Solve for x
   x = 2,653,673.75/2,321.91
6. Step 6: Final answer
   x = 1,142.88