Finding the Fourth Proportional to 2,948.58, 4,070.79 and 2,620.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,948.58 : 4,070.79 = 2,620.53 : x
2. Step 2: Convert to fraction form
   2,948.58/4,070.79 = 2,620.53/x
3. Step 3: Cross multiply
   2,948.58x = 4,070.79 × 2,620.53
4. Step 4: Simplify right side
   2,948.58x = 10,667,627.32
5. Step 5: Solve for x
   x = 10,667,627.32/2,948.58
6. Step 6: Final answer
   x = 3,617.89