Finding the Fourth Proportional to 2,602.98, 3,900.78 and 1,953

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.98 : 3,900.78 = 1,953 : x
2. Step 2: Convert to fraction form
   2,602.98/3,900.78 = 1,953/x
3. Step 3: Cross multiply
   2,602.98x = 3,900.78 × 1,953
4. Step 4: Simplify right side
   2,602.98x = 7,618,223.34
5. Step 5: Solve for x
   x = 7,618,223.34/2,602.98
6. Step 6: Final answer
   x = 2,926.73