Finding the Fourth Proportional to 2,985.76, 4,120.35 and 1,806.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.76 : 4,120.35 = 1,806.53 : x
2. Step 2: Convert to fraction form
   2,985.76/4,120.35 = 1,806.53/x
3. Step 3: Cross multiply
   2,985.76x = 4,120.35 × 1,806.53
4. Step 4: Simplify right side
   2,985.76x = 7,443,535.89
5. Step 5: Solve for x
   x = 7,443,535.89/2,985.76
6. Step 6: Final answer
   x = 2,493.02