Finding the Fourth Proportional to 3,870,748.53, 5,803,881.12 and 1,311,105.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870,748.53 : 5,803,881.12 = 1,311,105.60 : x
2. Step 2: Convert to fraction form
   3,870,748.53/5,803,881.12 = 1,311,105.60/x
3. Step 3: Cross multiply
   3,870,748.53x = 5,803,881.12 × 1,311,105.60
4. Step 4: Simplify right side
   3,870,748.53x = 7,609,501,038,166.27
5. Step 5: Solve for x
   x = 7,609,501,038,166.27/3,870,748.53
6. Step 6: Final answer
   x = 1,965,899.10