Finding the Fourth Proportional to 2,059.90, 3,090.87 and 964.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.90 : 3,090.87 = 964.35 : x
2. Step 2: Convert to fraction form
   2,059.90/3,090.87 = 964.35/x
3. Step 3: Cross multiply
   2,059.90x = 3,090.87 × 964.35
4. Step 4: Simplify right side
   2,059.90x = 2,980,680.48
5. Step 5: Solve for x
   x = 2,980,680.48/2,059.90
6. Step 6: Final answer
   x = 1,447.00