Finding the Fourth Proportional to 1,280,911.01, 1,767,748.71 and 707,938.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280,911.01 : 1,767,748.71 = 707,938.88 : x
2. Step 2: Convert to fraction form
   1,280,911.01/1,767,748.71 = 707,938.88/x
3. Step 3: Cross multiply
   1,280,911.01x = 1,767,748.71 × 707,938.88
4. Step 4: Simplify right side
   1,280,911.01x = 1,251,458,033,040.10
5. Step 5: Solve for x
   x = 1,251,458,033,040.10/1,280,911.01
6. Step 6: Final answer
   x = 977,006.23