Finding the Fourth Proportional to 3,998,128.50, 5,997,187.98 and 1,302,449.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998,128.50 : 5,997,187.98 = 1,302,449.40 : x
2. Step 2: Convert to fraction form
   3,998,128.50/5,997,187.98 = 1,302,449.40/x
3. Step 3: Cross multiply
   3,998,128.50x = 5,997,187.98 × 1,302,449.40
4. Step 4: Simplify right side
   3,998,128.50x = 7,811,033,886,238.21
5. Step 5: Solve for x
   x = 7,811,033,886,238.21/3,998,128.50
6. Step 6: Final answer
   x = 1,953,672.55