Finding the Fourth Proportional to 2,172,707.70, 2,998,196.82 and 1,205,838.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,707.70 : 2,998,196.82 = 1,205,838.60 : x
2. Step 2: Convert to fraction form
   2,172,707.70/2,998,196.82 = 1,205,838.60/x
3. Step 3: Cross multiply
   2,172,707.70x = 2,998,196.82 × 1,205,838.60
4. Step 4: Simplify right side
   2,172,707.70x = 3,615,341,455,953.25
5. Step 5: Solve for x
   x = 3,615,341,455,953.25/2,172,707.70
6. Step 6: Final answer
   x = 1,663,979.68