Finding the Fourth Proportional to 2,071,412.16, 2,858,139.52 and 1,308,511.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071,412.16 : 2,858,139.52 = 1,308,511.68 : x
2. Step 2: Convert to fraction form
   2,071,412.16/2,858,139.52 = 1,308,511.68/x
3. Step 3: Cross multiply
   2,071,412.16x = 2,858,139.52 × 1,308,511.68
4. Step 4: Simplify right side
   2,071,412.16x = 3,739,908,944,989.59
5. Step 5: Solve for x
   x = 3,739,908,944,989.59/2,071,412.16
6. Step 6: Final answer
   x = 1,805,487.59