Finding the Fourth Proportional to 1,256,613.06, 1,870,706.16 and 1,249,139.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,256,613.06 : 1,870,706.16 = 1,249,139.58 : x
2. Step 2: Convert to fraction form
   1,256,613.06/1,870,706.16 = 1,249,139.58/x
3. Step 3: Cross multiply
   1,256,613.06x = 1,870,706.16 × 1,249,139.58
4. Step 4: Simplify right side
   1,256,613.06x = 2,336,773,107,005.81
5. Step 5: Solve for x
   x = 2,336,773,107,005.81/1,256,613.06
6. Step 6: Final answer
   x = 1,859,580.47