Finding the Fourth Proportional to 3,575.63, 5,363.73 and 978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,575.63 : 5,363.73 = 978.50 : x
2. Step 2: Convert to fraction form
   3,575.63/5,363.73 = 978.50/x
3. Step 3: Cross multiply
   3,575.63x = 5,363.73 × 978.50
4. Step 4: Simplify right side
   3,575.63x = 5,248,409.81
5. Step 5: Solve for x
   x = 5,248,409.81/3,575.63
6. Step 6: Final answer
   x = 1,467.83