Finding the Fourth Proportional to 1,312.23, 1,810.83 and 722.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.23 : 1,810.83 = 722.73 : x
2. Step 2: Convert to fraction form
   1,312.23/1,810.83 = 722.73/x
3. Step 3: Cross multiply
   1,312.23x = 1,810.83 × 722.73
4. Step 4: Simplify right side
   1,312.23x = 1,308,741.17
5. Step 5: Solve for x
   x = 1,308,741.17/1,312.23
6. Step 6: Final answer
   x = 997.34