Finding the Fourth Proportional to 1,434,386.99, 1,979,497.59 and 789,830.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,386.99 : 1,979,497.59 = 789,830.25 : x
2. Step 2: Convert to fraction form
   1,434,386.99/1,979,497.59 = 789,830.25/x
3. Step 3: Cross multiply
   1,434,386.99x = 1,979,497.59 × 789,830.25
4. Step 4: Simplify right side
   1,434,386.99x = 1,563,467,066,486.61
5. Step 5: Solve for x
   x = 1,563,467,066,486.61/1,434,386.99
6. Step 6: Final answer
   x = 1,089,989.72