Finding the Fourth Proportional to 1,287,630.06, 1,931,425.43 and 435,300.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,630.06 : 1,931,425.43 = 435,300.42 : x
2. Step 2: Convert to fraction form
   1,287,630.06/1,931,425.43 = 435,300.42/x
3. Step 3: Cross multiply
   1,287,630.06x = 1,931,425.43 × 435,300.42
4. Step 4: Simplify right side
   1,287,630.06x = 840,750,305,944.02
5. Step 5: Solve for x
   x = 840,750,305,944.02/1,287,630.06
6. Step 6: Final answer
   x = 652,943.99