Finding the Fourth Proportional to 3,709.32, 5,558.94 and 1,861.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.32 : 5,558.94 = 1,861.76 : x
2. Step 2: Convert to fraction form
   3,709.32/5,558.94 = 1,861.76/x
3. Step 3: Cross multiply
   3,709.32x = 5,558.94 × 1,861.76
4. Step 4: Simplify right side
   3,709.32x = 10,349,384.34
5. Step 5: Solve for x
   x = 10,349,384.34/3,709.32
6. Step 6: Final answer
   x = 2,790.10