Finding the Fourth Proportional to 2,602.21, 3,591.12 and 1,554.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.21 : 3,591.12 = 1,554.88 : x
2. Step 2: Convert to fraction form
   2,602.21/3,591.12 = 1,554.88/x
3. Step 3: Cross multiply
   2,602.21x = 3,591.12 × 1,554.88
4. Step 4: Simplify right side
   2,602.21x = 5,583,760.67
5. Step 5: Solve for x
   x = 5,583,760.67/2,602.21
6. Step 6: Final answer
   x = 2,145.78