Finding the Fourth Proportional to 700,091.69, 1,048,601.25 and 578,773.68

Step by Step Solution

1. Step 1: Write the proportion equation
   700,091.69 : 1,048,601.25 = 578,773.68 : x
2. Step 2: Convert to fraction form
   700,091.69/1,048,601.25 = 578,773.68/x
3. Step 3: Cross multiply
   700,091.69x = 1,048,601.25 × 578,773.68
4. Step 4: Simplify right side
   700,091.69x = 606,902,804,315.10
5. Step 5: Solve for x
   x = 606,902,804,315.10/700,091.69
6. Step 6: Final answer
   x = 866,890.46