Finding the Fourth Proportional to 1,868,477.78, 2,578,499.30 and 1,009,037.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868,477.78 : 2,578,499.30 = 1,009,037.96 : x
2. Step 2: Convert to fraction form
   1,868,477.78/2,578,499.30 = 1,009,037.96/x
3. Step 3: Cross multiply
   1,868,477.78x = 2,578,499.30 × 1,009,037.96
4. Step 4: Simplify right side
   1,868,477.78x = 2,601,803,673,533.43
5. Step 5: Solve for x
   x = 2,601,803,673,533.43/1,868,477.78
6. Step 6: Final answer
   x = 1,392,472.37