Finding the Fourth Proportional to 2,648.76, 3,973.56 and 917.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.76 : 3,973.56 = 917.52 : x
2. Step 2: Convert to fraction form
   2,648.76/3,973.56 = 917.52/x
3. Step 3: Cross multiply
   2,648.76x = 3,973.56 × 917.52
4. Step 4: Simplify right side
   2,648.76x = 3,645,820.77
5. Step 5: Solve for x
   x = 3,645,820.77/2,648.76
6. Step 6: Final answer
   x = 1,376.43