Finding the Fourth Proportional to 1,312.00, 1,810.55 and 722.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.00 : 1,810.55 = 722.53 : x
2. Step 2: Convert to fraction form
   1,312.00/1,810.55 = 722.53/x
3. Step 3: Cross multiply
   1,312.00x = 1,810.55 × 722.53
4. Step 4: Simplify right side
   1,312.00x = 1,308,176.69
5. Step 5: Solve for x
   x = 1,308,176.69/1,312.00
6. Step 6: Final answer
   x = 997.09