Finding the Fourth Proportional to 2,116,669.10, 2,921,412.74 and 1,380,345.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,669.10 : 2,921,412.74 = 1,380,345.23 : x
2. Step 2: Convert to fraction form
   2,116,669.10/2,921,412.74 = 1,380,345.23/x
3. Step 3: Cross multiply
   2,116,669.10x = 2,921,412.74 × 1,380,345.23
4. Step 4: Simplify right side
   2,116,669.10x = 4,032,558,140,922.04
5. Step 5: Solve for x
   x = 4,032,558,140,922.04/2,116,669.10
6. Step 6: Final answer
   x = 1,905,143.39