Finding the Fourth Proportional to 2,890.74, 3,988.29 and 1,770.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.74 : 3,988.29 = 1,770.51 : x
2. Step 2: Convert to fraction form
   2,890.74/3,988.29 = 1,770.51/x
3. Step 3: Cross multiply
   2,890.74x = 3,988.29 × 1,770.51
4. Step 4: Simplify right side
   2,890.74x = 7,061,307.33
5. Step 5: Solve for x
   x = 7,061,307.33/2,890.74
6. Step 6: Final answer
   x = 2,442.73