Finding the Fourth Proportional to 2,172,321.05, 2,997,835.92 and 1,205,513.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,321.05 : 2,997,835.92 = 1,205,513.96 : x
2. Step 2: Convert to fraction form
   2,172,321.05/2,997,835.92 = 1,205,513.96/x
3. Step 3: Cross multiply
   2,172,321.05x = 2,997,835.92 × 1,205,513.96
4. Step 4: Simplify right side
   2,172,321.05x = 3,613,933,036,360.26
5. Step 5: Solve for x
   x = 3,613,933,036,360.26/2,172,321.05
6. Step 6: Final answer
   x = 1,663,627.50