Finding the Fourth Proportional to 2,102.04, 2,900.43 and 1,317.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.04 : 2,900.43 = 1,317.15 : x
2. Step 2: Convert to fraction form
   2,102.04/2,900.43 = 1,317.15/x
3. Step 3: Cross multiply
   2,102.04x = 2,900.43 × 1,317.15
4. Step 4: Simplify right side
   2,102.04x = 3,820,301.37
5. Step 5: Solve for x
   x = 3,820,301.37/2,102.04
6. Step 6: Final answer
   x = 1,817.43