Finding the Fourth Proportional to 2,407.47, 3,317.14 and 1,620.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.47 : 3,317.14 = 1,620.15 : x
2. Step 2: Convert to fraction form
   2,407.47/3,317.14 = 1,620.15/x
3. Step 3: Cross multiply
   2,407.47x = 3,317.14 × 1,620.15
4. Step 4: Simplify right side
   2,407.47x = 5,374,264.37
5. Step 5: Solve for x
   x = 5,374,264.37/2,407.47
6. Step 6: Final answer
   x = 2,232.33