Finding the Fourth Proportional to 1,378,499.82, 1,902,219.39 and 766,653.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,499.82 : 1,902,219.39 = 766,653.72 : x
2. Step 2: Convert to fraction form
   1,378,499.82/1,902,219.39 = 766,653.72/x
3. Step 3: Cross multiply
   1,378,499.82x = 1,902,219.39 × 766,653.72
4. Step 4: Simplify right side
   1,378,499.82x = 1,458,343,571,599.63
5. Step 5: Solve for x
   x = 1,458,343,571,599.63/1,378,499.82
6. Step 6: Final answer
   x = 1,057,920.76