Finding the Fourth Proportional to 2,599.59, 3,899.51 and 651.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.59 : 3,899.51 = 651.81 : x
2. Step 2: Convert to fraction form
   2,599.59/3,899.51 = 651.81/x
3. Step 3: Cross multiply
   2,599.59x = 3,899.51 × 651.81
4. Step 4: Simplify right side
   2,599.59x = 2,541,736.35
5. Step 5: Solve for x
   x = 2,541,736.35/2,599.59
6. Step 6: Final answer
   x = 977.75