Finding the Fourth Proportional to 1,578,719.34, 2,178,638.78 and 881,029.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,719.34 : 2,178,638.78 = 881,029.89 : x
2. Step 2: Convert to fraction form
   1,578,719.34/2,178,638.78 = 881,029.89/x
3. Step 3: Cross multiply
   1,578,719.34x = 2,178,638.78 × 881,029.89
4. Step 4: Simplify right side
   1,578,719.34x = 1,919,445,880,287.98
5. Step 5: Solve for x
   x = 1,919,445,880,287.98/1,578,719.34
6. Step 6: Final answer
   x = 1,215,824.64