Finding the Fourth Proportional to 1,312.04, 1,810.71 and 722.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.04 : 1,810.71 = 722.67 : x
2. Step 2: Convert to fraction form
   1,312.04/1,810.71 = 722.67/x
3. Step 3: Cross multiply
   1,312.04x = 1,810.71 × 722.67
4. Step 4: Simplify right side
   1,312.04x = 1,308,548.52
5. Step 5: Solve for x
   x = 1,308,548.52/1,312.04
6. Step 6: Final answer
   x = 997.34