Finding the Fourth Proportional to 1,223,551.82, 1,688,454.56 and 679,721.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,551.82 : 1,688,454.56 = 679,721.82 : x
2. Step 2: Convert to fraction form
   1,223,551.82/1,688,454.56 = 679,721.82/x
3. Step 3: Cross multiply
   1,223,551.82x = 1,688,454.56 × 679,721.82
4. Step 4: Simplify right side
   1,223,551.82x = 1,147,679,406,510.50
5. Step 5: Solve for x
   x = 1,147,679,406,510.50/1,223,551.82
6. Step 6: Final answer
   x = 937,990.03