Finding the Fourth Proportional to 2,172,915.45, 3,262,572.72 and 1,215,247.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,915.45 : 3,262,572.72 = 1,215,247.35 : x
2. Step 2: Convert to fraction form
   2,172,915.45/3,262,572.72 = 1,215,247.35/x
3. Step 3: Cross multiply
   2,172,915.45x = 3,262,572.72 × 1,215,247.35
4. Step 4: Simplify right side
   2,172,915.45x = 3,964,832,852,162.29
5. Step 5: Solve for x
   x = 3,964,832,852,162.29/2,172,915.45
6. Step 6: Final answer
   x = 1,824,660.44