Finding the Fourth Proportional to 1,978,693.64, 2,726,865.34 and 1,585,780.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,693.64 : 2,726,865.34 = 1,585,780.31 : x
2. Step 2: Convert to fraction form
   1,978,693.64/2,726,865.34 = 1,585,780.31/x
3. Step 3: Cross multiply
   1,978,693.64x = 2,726,865.34 × 1,585,780.31
4. Step 4: Simplify right side
   1,978,693.64x = 4,324,209,364,193.46
5. Step 5: Solve for x
   x = 4,324,209,364,193.46/1,978,693.64
6. Step 6: Final answer
   x = 2,185,385.99