Finding the Fourth Proportional to 1,312.82, 1,811.61 and 753.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.82 : 1,811.61 = 753.23 : x
2. Step 2: Convert to fraction form
   1,312.82/1,811.61 = 753.23/x
3. Step 3: Cross multiply
   1,312.82x = 1,811.61 × 753.23
4. Step 4: Simplify right side
   1,312.82x = 1,364,559.00
5. Step 5: Solve for x
   x = 1,364,559.00/1,312.82
6. Step 6: Final answer
   x = 1,039.41