Finding the Fourth Proportional to 1,921.77, 2,651.72 and 1,136.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.77 : 2,651.72 = 1,136.07 : x
2. Step 2: Convert to fraction form
   1,921.77/2,651.72 = 1,136.07/x
3. Step 3: Cross multiply
   1,921.77x = 2,651.72 × 1,136.07
4. Step 4: Simplify right side
   1,921.77x = 3,012,533.86
5. Step 5: Solve for x
   x = 3,012,533.86/1,921.77
6. Step 6: Final answer
   x = 1,567.58