Finding the Fourth Proportional to 2,620.83, 3,615.15 and 1,612.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.83 : 3,615.15 = 1,612.70 : x
2. Step 2: Convert to fraction form
   2,620.83/3,615.15 = 1,612.70/x
3. Step 3: Cross multiply
   2,620.83x = 3,615.15 × 1,612.70
4. Step 4: Simplify right side
   2,620.83x = 5,830,152.41
5. Step 5: Solve for x
   x = 5,830,152.41/2,620.83
6. Step 6: Final answer
   x = 2,224.54