Finding the Fourth Proportional to 640,426.32, 960,638.27 and 601,453.98

Step by Step Solution

1. Step 1: Write the proportion equation
   640,426.32 : 960,638.27 = 601,453.98 : x
2. Step 2: Convert to fraction form
   640,426.32/960,638.27 = 601,453.98/x
3. Step 3: Cross multiply
   640,426.32x = 960,638.27 × 601,453.98
4. Step 4: Simplify right side
   640,426.32x = 577,779,707,824.55
5. Step 5: Solve for x
   x = 577,779,707,824.55/640,426.32
6. Step 6: Final answer
   x = 902,179.83