Finding the Fourth Proportional to 1,689,498.50, 2,534,256.25 and 427,327.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,498.50 : 2,534,256.25 = 427,327.34 : x
2. Step 2: Convert to fraction form
   1,689,498.50/2,534,256.25 = 427,327.34/x
3. Step 3: Cross multiply
   1,689,498.50x = 2,534,256.25 × 427,327.34
4. Step 4: Simplify right side
   1,689,498.50x = 1,082,956,968,451.28
5. Step 5: Solve for x
   x = 1,082,956,968,451.28/1,689,498.50
6. Step 6: Final answer
   x = 640,993.15