Finding the Fourth Proportional to 887,773.50, 1,225,131.75 and 485,365.50

Step by Step Solution

1. Step 1: Write the proportion equation
   887,773.50 : 1,225,131.75 = 485,365.50 : x
2. Step 2: Convert to fraction form
   887,773.50/1,225,131.75 = 485,365.50/x
3. Step 3: Cross multiply
   887,773.50x = 1,225,131.75 × 485,365.50
4. Step 4: Simplify right side
   887,773.50x = 594,636,684,404.63
5. Step 5: Solve for x
   x = 594,636,684,404.63/887,773.50
6. Step 6: Final answer
   x = 669,806.75