Finding the Fourth Proportional to 5,280.04, 7,919.34 and 1,384.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280.04 : 7,919.34 = 1,384.12 : x
2. Step 2: Convert to fraction form
   5,280.04/7,919.34 = 1,384.12/x
3. Step 3: Cross multiply
   5,280.04x = 7,919.34 × 1,384.12
4. Step 4: Simplify right side
   5,280.04x = 10,961,316.88
5. Step 5: Solve for x
   x = 10,961,316.88/5,280.04
6. Step 6: Final answer
   x = 2,075.99