Finding the Fourth Proportional to 2,601.65, 3,591.50 and 1,607.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.65 : 3,591.50 = 1,607.51 : x
2. Step 2: Convert to fraction form
   2,601.65/3,591.50 = 1,607.51/x
3. Step 3: Cross multiply
   2,601.65x = 3,591.50 × 1,607.51
4. Step 4: Simplify right side
   2,601.65x = 5,773,372.17
5. Step 5: Solve for x
   x = 5,773,372.17/2,601.65
6. Step 6: Final answer
   x = 2,219.12