Finding the Fourth Proportional to 1,487.00, 2,052.20 and 823.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.00 : 2,052.20 = 823.98 : x
2. Step 2: Convert to fraction form
   1,487.00/2,052.20 = 823.98/x
3. Step 3: Cross multiply
   1,487.00x = 2,052.20 × 823.98
4. Step 4: Simplify right side
   1,487.00x = 1,690,981.51
5. Step 5: Solve for x
   x = 1,690,981.51/1,487.00
6. Step 6: Final answer
   x = 1,137.17