Finding the Fourth Proportional to 2,927,430.57, 4,391,367.98 and 905,878.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,927,430.57 : 4,391,367.98 = 905,878.86 : x
2. Step 2: Convert to fraction form
   2,927,430.57/4,391,367.98 = 905,878.86/x
3. Step 3: Cross multiply
   2,927,430.57x = 4,391,367.98 × 905,878.86
4. Step 4: Simplify right side
   2,927,430.57x = 3,978,047,415,033.51
5. Step 5: Solve for x
   x = 3,978,047,415,033.51/2,927,430.57
6. Step 6: Final answer
   x = 1,358,887.02