Finding the Fourth Proportional to 3,779.34, 5,665.77 and 1,312.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,779.34 : 5,665.77 = 1,312.62 : x
2. Step 2: Convert to fraction form
   3,779.34/5,665.77 = 1,312.62/x
3. Step 3: Cross multiply
   3,779.34x = 5,665.77 × 1,312.62
4. Step 4: Simplify right side
   3,779.34x = 7,437,003.02
5. Step 5: Solve for x
   x = 7,437,003.02/3,779.34
6. Step 6: Final answer
   x = 1,967.80