Finding the Fourth Proportional to 1,047.04, 1,562.72 and 977.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.04 : 1,562.72 = 977.92 : x
2. Step 2: Convert to fraction form
   1,047.04/1,562.72 = 977.92/x
3. Step 3: Cross multiply
   1,047.04x = 1,562.72 × 977.92
4. Step 4: Simplify right side
   1,047.04x = 1,528,215.14
5. Step 5: Solve for x
   x = 1,528,215.14/1,047.04
6. Step 6: Final answer
   x = 1,459.56