Finding the Fourth Proportional to 1,723.93, 2,583.15 and 1,312.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,723.93 : 2,583.15 = 1,312.59 : x
2. Step 2: Convert to fraction form
   1,723.93/2,583.15 = 1,312.59/x
3. Step 3: Cross multiply
   1,723.93x = 2,583.15 × 1,312.59
4. Step 4: Simplify right side
   1,723.93x = 3,390,603.94
5. Step 5: Solve for x
   x = 3,390,603.94/1,723.93
6. Step 6: Final answer
   x = 1,966.79