Finding the Fourth Proportional to 1,367.40, 2,047.86 and 977.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.40 : 2,047.86 = 977.88 : x
2. Step 2: Convert to fraction form
   1,367.40/2,047.86 = 977.88/x
3. Step 3: Cross multiply
   1,367.40x = 2,047.86 × 977.88
4. Step 4: Simplify right side
   1,367.40x = 2,002,561.34
5. Step 5: Solve for x
   x = 2,002,561.34/1,367.40
6. Step 6: Final answer
   x = 1,464.50