Finding the Fourth Proportional to 1,973.58, 2,723.64 and 1,309.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.58 : 2,723.64 = 1,309.30 : x
2. Step 2: Convert to fraction form
   1,973.58/2,723.64 = 1,309.30/x
3. Step 3: Cross multiply
   1,973.58x = 2,723.64 × 1,309.30
4. Step 4: Simplify right side
   1,973.58x = 3,566,061.85
5. Step 5: Solve for x
   x = 3,566,061.85/1,973.58
6. Step 6: Final answer
   x = 1,806.90