Finding the Fourth Proportional to 2,245.85, 3,100.70 and 1,538.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.85 : 3,100.70 = 1,538.88 : x
2. Step 2: Convert to fraction form
   2,245.85/3,100.70 = 1,538.88/x
3. Step 3: Cross multiply
   2,245.85x = 3,100.70 × 1,538.88
4. Step 4: Simplify right side
   2,245.85x = 4,771,597.52
5. Step 5: Solve for x
   x = 4,771,597.52/2,245.85
6. Step 6: Final answer
   x = 2,124.63