Finding the Fourth Proportional to 3,667.68, 5,501.28 and 1,070.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.68 : 5,501.28 = 1,070.40 : x
2. Step 2: Convert to fraction form
   3,667.68/5,501.28 = 1,070.40/x
3. Step 3: Cross multiply
   3,667.68x = 5,501.28 × 1,070.40
4. Step 4: Simplify right side
   3,667.68x = 5,888,570.11
5. Step 5: Solve for x
   x = 5,888,570.11/3,667.68
6. Step 6: Final answer
   x = 1,605.53