Finding the Fourth Proportional to 1,179.71, 1,762.77 and 900.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.71 : 1,762.77 = 900.47 : x
2. Step 2: Convert to fraction form
   1,179.71/1,762.77 = 900.47/x
3. Step 3: Cross multiply
   1,179.71x = 1,762.77 × 900.47
4. Step 4: Simplify right side
   1,179.71x = 1,587,321.50
5. Step 5: Solve for x
   x = 1,587,321.50/1,179.71
6. Step 6: Final answer
   x = 1,345.52