Finding the Fourth Proportional to 3,787.89, 5,681.79 and 976.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.89 : 5,681.79 = 976.71 : x
2. Step 2: Convert to fraction form
   3,787.89/5,681.79 = 976.71/x
3. Step 3: Cross multiply
   3,787.89x = 5,681.79 × 976.71
4. Step 4: Simplify right side
   3,787.89x = 5,549,461.11
5. Step 5: Solve for x
   x = 5,549,461.11/3,787.89
6. Step 6: Final answer
   x = 1,465.05