Finding the Fourth Proportional to 1,030,870.32, 1,422,648.93 and 643,914.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030,870.32 : 1,422,648.93 = 643,914.84 : x
2. Step 2: Convert to fraction form
   1,030,870.32/1,422,648.93 = 643,914.84/x
3. Step 3: Cross multiply
   1,030,870.32x = 1,422,648.93 × 643,914.84
4. Step 4: Simplify right side
   1,030,870.32x = 916,064,758,137.12
5. Step 5: Solve for x
   x = 916,064,758,137.12/1,030,870.32
6. Step 6: Final answer
   x = 888,632.39