Finding the Fourth Proportional to 1,973.58, 2,724.67 and 1,311.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.58 : 2,724.67 = 1,311.34 : x
2. Step 2: Convert to fraction form
   1,973.58/2,724.67 = 1,311.34/x
3. Step 3: Cross multiply
   1,973.58x = 2,724.67 × 1,311.34
4. Step 4: Simplify right side
   1,973.58x = 3,572,968.76
5. Step 5: Solve for x
   x = 3,572,968.76/1,973.58
6. Step 6: Final answer
   x = 1,810.40