Finding the Fourth Proportional to 1,977.83, 2,964.43 and 807.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,977.83 : 2,964.43 = 807.10 : x
2. Step 2: Convert to fraction form
   1,977.83/2,964.43 = 807.10/x
3. Step 3: Cross multiply
   1,977.83x = 2,964.43 × 807.10
4. Step 4: Simplify right side
   1,977.83x = 2,392,591.45
5. Step 5: Solve for x
   x = 2,392,591.45/1,977.83
6. Step 6: Final answer
   x = 1,209.71