Finding the Fourth Proportional to 2,881.76, 3,975.60 and 1,886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,881.76 : 3,975.60 = 1,886.72 : x
2. Step 2: Convert to fraction form
   2,881.76/3,975.60 = 1,886.72/x
3. Step 3: Cross multiply
   2,881.76x = 3,975.60 × 1,886.72
4. Step 4: Simplify right side
   2,881.76x = 7,500,844.03
5. Step 5: Solve for x
   x = 7,500,844.03/2,881.76
6. Step 6: Final answer
   x = 2,602.87