Finding the Fourth Proportional to 3,781.86, 5,671.00 and 1,316.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.86 : 5,671.00 = 1,316.38 : x
2. Step 2: Convert to fraction form
   3,781.86/5,671.00 = 1,316.38/x
3. Step 3: Cross multiply
   3,781.86x = 5,671.00 × 1,316.38
4. Step 4: Simplify right side
   3,781.86x = 7,465,184.40
5. Step 5: Solve for x
   x = 7,465,184.40/3,781.86
6. Step 6: Final answer
   x = 1,973.95