Finding the Fourth Proportional to 2,116,156.72, 2,918,607.97 and 1,391,748.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,156.72 : 2,918,607.97 = 1,391,748.25 : x
2. Step 2: Convert to fraction form
   2,116,156.72/2,918,607.97 = 1,391,748.25/x
3. Step 3: Cross multiply
   2,116,156.72x = 2,918,607.97 × 1,391,748.25
4. Step 4: Simplify right side
   2,116,156.72x = 4,061,967,513,131.77
5. Step 5: Solve for x
   x = 4,061,967,513,131.77/2,116,156.72
6. Step 6: Final answer
   x = 1,919,502.22