Finding the Fourth Proportional to 1,722.50, 2,374.16 and 1,318.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.50 : 2,374.16 = 1,318.59 : x
2. Step 2: Convert to fraction form
   1,722.50/2,374.16 = 1,318.59/x
3. Step 3: Cross multiply
   1,722.50x = 2,374.16 × 1,318.59
4. Step 4: Simplify right side
   1,722.50x = 3,130,525.17
5. Step 5: Solve for x
   x = 3,130,525.17/1,722.50
6. Step 6: Final answer
   x = 1,817.44