Finding the Fourth Proportional to 887,892.51, 1,224,991.83 and 505,648.65

Step by Step Solution

1. Step 1: Write the proportion equation
   887,892.51 : 1,224,991.83 = 505,648.65 : x
2. Step 2: Convert to fraction form
   887,892.51/1,224,991.83 = 505,648.65/x
3. Step 3: Cross multiply
   887,892.51x = 1,224,991.83 × 505,648.65
4. Step 4: Simplify right side
   887,892.51x = 619,415,465,100.53
5. Step 5: Solve for x
   x = 619,415,465,100.53/887,892.51
6. Step 6: Final answer
   x = 697,624.38