Finding the Fourth Proportional to 2,962.71, 4,088.76 and 1,917.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,962.71 : 4,088.76 = 1,917.81 : x
2. Step 2: Convert to fraction form
   2,962.71/4,088.76 = 1,917.81/x
3. Step 3: Cross multiply
   2,962.71x = 4,088.76 × 1,917.81
4. Step 4: Simplify right side
   2,962.71x = 7,841,464.82
5. Step 5: Solve for x
   x = 7,841,464.82/2,962.71
6. Step 6: Final answer
   x = 2,646.72