Finding the Fourth Proportional to 1,421,026.56, 1,961,030.40 and 776,446.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,026.56 : 1,961,030.40 = 776,446.72 : x
2. Step 2: Convert to fraction form
   1,421,026.56/1,961,030.40 = 776,446.72/x
3. Step 3: Cross multiply
   1,421,026.56x = 1,961,030.40 × 776,446.72
4. Step 4: Simplify right side
   1,421,026.56x = 1,522,635,621,900.29
5. Step 5: Solve for x
   x = 1,522,635,621,900.29/1,421,026.56
6. Step 6: Final answer
   x = 1,071,503.99